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|
<?xml version="1.0" encoding="ascii"?>
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Module pyparsing
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<!-- ==================== MODULE DESCRIPTION ==================== -->
<h1 class="epydoc">Module pyparsing</h1><p class="nomargin-top"><span class="codelink"><a href="pyparsing-pysrc.html">source code</a></span></p>
<p>pyparsing module - Classes and methods to define and execute parsing
grammars</p>
<p>The pyparsing module is an alternative approach to creating and
executing simple grammars, vs. the traditional lex/yacc approach, or the
use of regular expressions. With pyparsing, you don't need to learn a
new syntax for defining grammars or matching expressions - the parsing
module provides a library of classes that you use to construct the
grammar directly in Python.</p>
<p>Here is a program to parse "Hello, World!" (or any greeting
of the form <code>"<salutation>,
<addressee>!"</code>), built up using <a
href="pyparsing.Word-class.html" class="link">Word</a>, <a
href="pyparsing.Literal-class.html" class="link"
onclick="show_private();">Literal</a>, and <a
href="pyparsing.And-class.html" class="link">And</a> elements (<a
href="pyparsing.ParserElement-class.html#__add__" class="link">'+'</a>
operator gives <a href="pyparsing.And-class.html" class="link">And</a>
expressions, strings are auto-converted to <a
href="pyparsing.Literal-class.html" class="link"
onclick="show_private();">Literal</a> expressions):</p>
<pre class="literalblock">
from pyparsing import Word, alphas
# define grammar of a greeting
greet = Word(alphas) + "," + Word(alphas) + "!"
hello = "Hello, World!"
print (hello, "->", greet.parseString(hello))
</pre>
<p>The program outputs the following:</p>
<pre class="literalblock">
Hello, World! -> ['Hello', ',', 'World', '!']
</pre>
<p>The Python representation of the grammar is quite readable, owing to
the self-explanatory class names, and the use of '+', '|' and '^'
operators.</p>
<p>The <a href="pyparsing.ParseResults-class.html"
class="link">ParseResults</a> object returned from <a
href="pyparsing.ParserElement-class.html#parseString"
class="link">ParserElement.parseString</a> can be accessed as a nested
list, a dictionary, or an object with named attributes.</p>
<p>The pyparsing module handles some of the problems that are typically
vexing when writing text parsers:</p>
<ul>
<li>
extra or missing whitespace (the above program will also handle
"Hello,World!", "Hello , World !", etc.)
</li>
<li>
quoted strings
</li>
<li>
embedded comments
</li>
</ul>
<hr />
<div class="fields"> <p><strong>Version:</strong>
2.2.0
</p>
<p><strong>Author:</strong>
Paul McGuire <ptmcg@users.sourceforge.net>
</p>
</div><!-- ==================== CLASSES ==================== -->
<a name="section-Classes"></a>
<table class="summary" border="1" cellpadding="3"
cellspacing="0" width="100%" bgcolor="white">
<tr bgcolor="#70b0f0" class="table-header">
<td align="left" colspan="2" class="table-header">
<span class="table-header">Classes</span></td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a href="pyparsing.ParseBaseException-class.html" class="summary-name">ParseBaseException</a><br />
base exception class for all parsing runtime exceptions
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a href="pyparsing.ParseException-class.html" class="summary-name">ParseException</a><br />
Exception thrown when parse expressions don't match class;
supported attributes by name are:
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a href="pyparsing.ParseFatalException-class.html" class="summary-name">ParseFatalException</a><br />
user-throwable exception thrown when inconsistent parse content is
found; stops all parsing immediately
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a href="pyparsing.ParseSyntaxException-class.html" class="summary-name">ParseSyntaxException</a><br />
just like <a href="pyparsing.ParseFatalException-class.html"
class="link">ParseFatalException</a>, but thrown internally when an
ErrorStop ('-' operator) indicates that parsing is to stop
immediately because an unbacktrackable syntax error has been found
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a href="pyparsing.RecursiveGrammarException-class.html" class="summary-name">RecursiveGrammarException</a><br />
exception thrown by <a
href="pyparsing.ParserElement-class.html#validate"
class="link">ParserElement.validate</a> if the grammar could be
improperly recursive
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a href="pyparsing.ParseResults-class.html" class="summary-name">ParseResults</a><br />
Structured parse results, to provide multiple means of access to
the parsed data:
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a href="pyparsing.ParserElement-class.html" class="summary-name">ParserElement</a><br />
Abstract base level parser element class.
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a href="pyparsing.Token-class.html" class="summary-name">Token</a><br />
Abstract <code>ParserElement</code> subclass, for defining atomic
matching patterns.
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a href="pyparsing.Empty-class.html" class="summary-name">Empty</a><br />
An empty token, will always match.
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a href="pyparsing.NoMatch-class.html" class="summary-name">NoMatch</a><br />
A token that will never match.
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a href="pyparsing.Literal-class.html" class="summary-name">Literal</a><br />
Token to exactly match a specified string.
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a href="pyparsing.Keyword-class.html" class="summary-name">Keyword</a><br />
Token to exactly match a specified string as a keyword, that is, it
must be immediately followed by a non-keyword character.
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a href="pyparsing.CaselessLiteral-class.html" class="summary-name">CaselessLiteral</a><br />
Token to match a specified string, ignoring case of letters.
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a href="pyparsing.CaselessKeyword-class.html" class="summary-name">CaselessKeyword</a><br />
Caseless version of <a href="pyparsing.Keyword-class.html"
class="link">Keyword</a>.
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a href="pyparsing.CloseMatch-class.html" class="summary-name">CloseMatch</a><br />
A variation on <a href="pyparsing.Literal-class.html" class="link"
onclick="show_private();">Literal</a> which matches
"close" matches, that is, strings with at most 'n'
mismatching characters.
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a href="pyparsing.Word-class.html" class="summary-name">Word</a><br />
Token for matching words composed of allowed character sets.
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a href="pyparsing.Regex-class.html" class="summary-name">Regex</a><br />
Token for matching strings that match a given regular expression.
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a href="pyparsing.QuotedString-class.html" class="summary-name">QuotedString</a><br />
Token for matching strings that are delimited by quoting
characters.
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a href="pyparsing.CharsNotIn-class.html" class="summary-name">CharsNotIn</a><br />
Token for matching words composed of characters <i>not</i> in a
given set (will include whitespace in matched characters if not
listed in the provided exclusion set - see example).
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a href="pyparsing.White-class.html" class="summary-name">White</a><br />
Special matching class for matching whitespace.
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a href="pyparsing.GoToColumn-class.html" class="summary-name">GoToColumn</a><br />
Token to advance to a specific column of input text; useful for
tabular report scraping.
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a href="pyparsing.LineStart-class.html" class="summary-name">LineStart</a><br />
Matches if current position is at the beginning of a line within
the parse string
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a href="pyparsing.LineEnd-class.html" class="summary-name">LineEnd</a><br />
Matches if current position is at the end of a line within the
parse string
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a href="pyparsing.StringStart-class.html" class="summary-name">StringStart</a><br />
Matches if current position is at the beginning of the parse string
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a href="pyparsing.StringEnd-class.html" class="summary-name">StringEnd</a><br />
Matches if current position is at the end of the parse string
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a href="pyparsing.WordStart-class.html" class="summary-name">WordStart</a><br />
Matches if the current position is at the beginning of a Word, and
is not preceded by any character in a given set of
<code>wordChars</code> (default=<code>printables</code>).
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a href="pyparsing.WordEnd-class.html" class="summary-name">WordEnd</a><br />
Matches if the current position is at the end of a Word, and is not
followed by any character in a given set of <code>wordChars</code>
(default=<code>printables</code>).
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a href="pyparsing.ParseExpression-class.html" class="summary-name">ParseExpression</a><br />
Abstract subclass of ParserElement, for combining and
post-processing parsed tokens.
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a href="pyparsing.And-class.html" class="summary-name">And</a><br />
Requires all given <code>ParseExpression</code>s to be found in the
given order.
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a href="pyparsing.Or-class.html" class="summary-name">Or</a><br />
Requires that at least one <code>ParseExpression</code> is found.
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a href="pyparsing.MatchFirst-class.html" class="summary-name">MatchFirst</a><br />
Requires that at least one <code>ParseExpression</code> is found.
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a href="pyparsing.Each-class.html" class="summary-name">Each</a><br />
Requires all given <code>ParseExpression</code>s to be found, but
in any order.
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a href="pyparsing.ParseElementEnhance-class.html" class="summary-name">ParseElementEnhance</a><br />
Abstract subclass of <code>ParserElement</code>, for combining and
post-processing parsed tokens.
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a href="pyparsing.FollowedBy-class.html" class="summary-name">FollowedBy</a><br />
Lookahead matching of the given parse expression.
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a href="pyparsing.NotAny-class.html" class="summary-name">NotAny</a><br />
Lookahead to disallow matching with the given parse expression.
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a href="pyparsing.OneOrMore-class.html" class="summary-name">OneOrMore</a><br />
Repetition of one or more of the given expression.
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a href="pyparsing.ZeroOrMore-class.html" class="summary-name">ZeroOrMore</a><br />
Optional repetition of zero or more of the given expression.
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a href="pyparsing.Optional-class.html" class="summary-name">Optional</a><br />
Optional matching of the given expression.
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a href="pyparsing.SkipTo-class.html" class="summary-name">SkipTo</a><br />
Token for skipping over all undefined text until the matched
expression is found.
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a href="pyparsing.Forward-class.html" class="summary-name">Forward</a><br />
Forward declaration of an expression to be defined later - used for
recursive grammars, such as algebraic infix notation.
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a href="pyparsing.TokenConverter-class.html" class="summary-name">TokenConverter</a><br />
Abstract subclass of <code>ParseExpression</code>, for converting
parsed results.
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a href="pyparsing.Combine-class.html" class="summary-name">Combine</a><br />
Converter to concatenate all matching tokens to a single string.
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a href="pyparsing.Group-class.html" class="summary-name">Group</a><br />
Converter to return the matched tokens as a list - useful for
returning tokens of <code><a href="pyparsing.ZeroOrMore-class.html"
class="link">ZeroOrMore</a></code> and <code><a
href="pyparsing.OneOrMore-class.html"
class="link">OneOrMore</a></code> expressions.
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a href="pyparsing.Dict-class.html" class="summary-name">Dict</a><br />
Converter to return a repetitive expression as a list, but also as
a dictionary.
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a href="pyparsing.Suppress-class.html" class="summary-name">Suppress</a><br />
Converter for ignoring the results of a parsed expression.
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a href="pyparsing.OnlyOnce-class.html" class="summary-name">OnlyOnce</a><br />
Wrapper for parse actions, to ensure they are only called once.
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a href="pyparsing.pyparsing_common-class.html" class="summary-name">pyparsing_common</a><br />
Here are some common low-level expressions that may be useful in
jump-starting parser development:
</td>
</tr>
</table>
<!-- ==================== FUNCTIONS ==================== -->
<a name="section-Functions"></a>
<table class="summary" border="1" cellpadding="3"
cellspacing="0" width="100%" bgcolor="white">
<tr bgcolor="#70b0f0" class="table-header">
<td align="left" colspan="2" class="table-header">
<span class="table-header">Functions</span></td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr>
<td><span class="summary-sig"><a href="pyparsing-module.html#col" class="summary-sig-name">col</a>(<span class="summary-sig-arg">loc</span>,
<span class="summary-sig-arg">strg</span>)</span><br />
Returns current column within a string, counting newlines as line
separators.</td>
<td align="right" valign="top">
<span class="codelink"><a href="pyparsing-pysrc.html#col">source code</a></span>
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr>
<td><span class="summary-sig"><a href="pyparsing-module.html#lineno" class="summary-sig-name">lineno</a>(<span class="summary-sig-arg">loc</span>,
<span class="summary-sig-arg">strg</span>)</span><br />
Returns current line number within a string, counting newlines as
line separators.</td>
<td align="right" valign="top">
<span class="codelink"><a href="pyparsing-pysrc.html#lineno">source code</a></span>
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr>
<td><span class="summary-sig"><a name="line"></a><span class="summary-sig-name">line</span>(<span class="summary-sig-arg">loc</span>,
<span class="summary-sig-arg">strg</span>)</span><br />
Returns the line of text containing loc within a string, counting
newlines as line separators.</td>
<td align="right" valign="top">
<span class="codelink"><a href="pyparsing-pysrc.html#line">source code</a></span>
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr>
<td><span class="summary-sig"><a name="nullDebugAction"></a><span class="summary-sig-name">nullDebugAction</span>(<span class="summary-sig-arg">*args</span>)</span><br />
'Do-nothing' debug action, to suppress debugging output during
parsing.</td>
<td align="right" valign="top">
<span class="codelink"><a href="pyparsing-pysrc.html#nullDebugAction">source code</a></span>
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr>
<td><span class="summary-sig"><a href="pyparsing-module.html#traceParseAction" class="summary-sig-name">traceParseAction</a>(<span class="summary-sig-arg">f</span>)</span><br />
Decorator for debugging parse actions.</td>
<td align="right" valign="top">
<span class="codelink"><a href="pyparsing-pysrc.html#traceParseAction">source code</a></span>
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr>
<td><span class="summary-sig"><a href="pyparsing-module.html#delimitedList" class="summary-sig-name">delimitedList</a>(<span class="summary-sig-arg">expr</span>,
<span class="summary-sig-arg">delim</span>=<span class="summary-sig-default"><code class="variable-quote">'</code><code class="variable-string">,</code><code class="variable-quote">'</code></span>,
<span class="summary-sig-arg">combine</span>=<span class="summary-sig-default">False</span>)</span><br />
Helper to define a delimited list of expressions - the delimiter
defaults to ','.</td>
<td align="right" valign="top">
<span class="codelink"><a href="pyparsing-pysrc.html#delimitedList">source code</a></span>
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr>
<td><span class="summary-sig"><a href="pyparsing-module.html#countedArray" class="summary-sig-name">countedArray</a>(<span class="summary-sig-arg">expr</span>,
<span class="summary-sig-arg">intExpr</span>=<span class="summary-sig-default">None</span>)</span><br />
Helper to define a counted list of expressions.</td>
<td align="right" valign="top">
<span class="codelink"><a href="pyparsing-pysrc.html#countedArray">source code</a></span>
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr>
<td><span class="summary-sig"><a href="pyparsing-module.html#matchPreviousLiteral" class="summary-sig-name">matchPreviousLiteral</a>(<span class="summary-sig-arg">expr</span>)</span><br />
Helper to define an expression that is indirectly defined from the
tokens matched in a previous expression, that is, it looks for a
'repeat' of a previous expression.</td>
<td align="right" valign="top">
<span class="codelink"><a href="pyparsing-pysrc.html#matchPreviousLiteral">source code</a></span>
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr>
<td><span class="summary-sig"><a href="pyparsing-module.html#matchPreviousExpr" class="summary-sig-name">matchPreviousExpr</a>(<span class="summary-sig-arg">expr</span>)</span><br />
Helper to define an expression that is indirectly defined from the
tokens matched in a previous expression, that is, it looks for a
'repeat' of a previous expression.</td>
<td align="right" valign="top">
<span class="codelink"><a href="pyparsing-pysrc.html#matchPreviousExpr">source code</a></span>
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr>
<td><span class="summary-sig"><a href="pyparsing-module.html#oneOf" class="summary-sig-name">oneOf</a>(<span class="summary-sig-arg">strs</span>,
<span class="summary-sig-arg">caseless</span>=<span class="summary-sig-default">False</span>,
<span class="summary-sig-arg">useRegex</span>=<span class="summary-sig-default">True</span>)</span><br />
Helper to quickly define a set of alternative Literals, and makes
sure to do longest-first testing when there is a conflict, regardless
of the input order, but returns a <code><a
href="pyparsing.MatchFirst-class.html"
class="link">MatchFirst</a></code> for best performance.</td>
<td align="right" valign="top">
<span class="codelink"><a href="pyparsing-pysrc.html#oneOf">source code</a></span>
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr>
<td><span class="summary-sig"><a href="pyparsing-module.html#dictOf" class="summary-sig-name">dictOf</a>(<span class="summary-sig-arg">key</span>,
<span class="summary-sig-arg">value</span>)</span><br />
Helper to easily and clearly define a dictionary by specifying the
respective patterns for the key and value.</td>
<td align="right" valign="top">
<span class="codelink"><a href="pyparsing-pysrc.html#dictOf">source code</a></span>
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr>
<td><span class="summary-sig"><a href="pyparsing-module.html#originalTextFor" class="summary-sig-name">originalTextFor</a>(<span class="summary-sig-arg">expr</span>,
<span class="summary-sig-arg">asString</span>=<span class="summary-sig-default">True</span>)</span><br />
Helper to return the original, untokenized text for a given
expression.</td>
<td align="right" valign="top">
<span class="codelink"><a href="pyparsing-pysrc.html#originalTextFor">source code</a></span>
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr>
<td><span class="summary-sig"><a name="ungroup"></a><span class="summary-sig-name">ungroup</span>(<span class="summary-sig-arg">expr</span>)</span><br />
Helper to undo pyparsing's default grouping of And expressions, even
if all but one are non-empty.</td>
<td align="right" valign="top">
<span class="codelink"><a href="pyparsing-pysrc.html#ungroup">source code</a></span>
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr>
<td><span class="summary-sig"><a href="pyparsing-module.html#locatedExpr" class="summary-sig-name">locatedExpr</a>(<span class="summary-sig-arg">expr</span>)</span><br />
Helper to decorate a returned token with its starting and ending
locations in the input string.</td>
<td align="right" valign="top">
<span class="codelink"><a href="pyparsing-pysrc.html#locatedExpr">source code</a></span>
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr>
<td><span class="summary-sig"><a href="pyparsing-module.html#srange" class="summary-sig-name">srange</a>(<span class="summary-sig-arg">s</span>)</span><br />
Helper to easily define string ranges for use in Word construction.</td>
<td align="right" valign="top">
<span class="codelink"><a href="pyparsing-pysrc.html#srange">source code</a></span>
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr>
<td><span class="summary-sig"><a name="matchOnlyAtCol"></a><span class="summary-sig-name">matchOnlyAtCol</span>(<span class="summary-sig-arg">n</span>)</span><br />
Helper method for defining parse actions that require matching at a
specific column in the input text.</td>
<td align="right" valign="top">
<span class="codelink"><a href="pyparsing-pysrc.html#matchOnlyAtCol">source code</a></span>
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr>
<td><span class="summary-sig"><a href="pyparsing-module.html#replaceWith" class="summary-sig-name">replaceWith</a>(<span class="summary-sig-arg">replStr</span>)</span><br />
Helper method for common parse actions that simply return a literal
value.</td>
<td align="right" valign="top">
<span class="codelink"><a href="pyparsing-pysrc.html#replaceWith">source code</a></span>
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr>
<td><span class="summary-sig"><a href="pyparsing-module.html#removeQuotes" class="summary-sig-name">removeQuotes</a>(<span class="summary-sig-arg">s</span>,
<span class="summary-sig-arg">l</span>,
<span class="summary-sig-arg">t</span>)</span><br />
Helper parse action for removing quotation marks from parsed quoted
strings.</td>
<td align="right" valign="top">
<span class="codelink"><a href="pyparsing-pysrc.html#removeQuotes">source code</a></span>
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr>
<td><span class="summary-sig"><a href="pyparsing-module.html#tokenMap" class="summary-sig-name">tokenMap</a>(<span class="summary-sig-arg">func</span>,
<span class="summary-sig-arg">*args</span>)</span><br />
Helper to define a parse action by mapping a function to all elements
of a ParseResults list.If any additional args are passed, they are
forwarded to the given function as additional arguments after the
token, as in <code>hex_integer =
Word(hexnums).setParseAction(tokenMap(int, 16))</code>, which will
convert the parsed data to an integer using base 16.</td>
<td align="right" valign="top">
<span class="codelink"><a href="pyparsing-pysrc.html#tokenMap">source code</a></span>
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr>
<td><span class="summary-sig"><a href="pyparsing-module.html#upcaseTokens" class="summary-sig-name">upcaseTokens</a>(<span class="summary-sig-arg">s</span>,
<span class="summary-sig-arg">l</span>,
<span class="summary-sig-arg">t</span>)</span><br />
(Deprecated) Helper parse action to convert tokens to upper case.</td>
<td align="right" valign="top">
<span class="codelink"><a href="pyparsing-pysrc.html#upcaseTokens">source code</a></span>
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr>
<td><span class="summary-sig"><a href="pyparsing-module.html#downcaseTokens" class="summary-sig-name">downcaseTokens</a>(<span class="summary-sig-arg">s</span>,
<span class="summary-sig-arg">l</span>,
<span class="summary-sig-arg">t</span>)</span><br />
(Deprecated) Helper parse action to convert tokens to lower case.</td>
<td align="right" valign="top">
<span class="codelink"><a href="pyparsing-pysrc.html#downcaseTokens">source code</a></span>
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr>
<td><span class="summary-sig"><a href="pyparsing-module.html#makeHTMLTags" class="summary-sig-name">makeHTMLTags</a>(<span class="summary-sig-arg">tagStr</span>)</span><br />
Helper to construct opening and closing tag expressions for HTML,
given a tag name.</td>
<td align="right" valign="top">
<span class="codelink"><a href="pyparsing-pysrc.html#makeHTMLTags">source code</a></span>
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr>
<td><span class="summary-sig"><a href="pyparsing-module.html#makeXMLTags" class="summary-sig-name">makeXMLTags</a>(<span class="summary-sig-arg">tagStr</span>)</span><br />
Helper to construct opening and closing tag expressions for XML,
given a tag name.</td>
<td align="right" valign="top">
<span class="codelink"><a href="pyparsing-pysrc.html#makeXMLTags">source code</a></span>
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr>
<td><span class="summary-sig"><a href="pyparsing-module.html#withAttribute" class="summary-sig-name">withAttribute</a>(<span class="summary-sig-arg">*args</span>,
<span class="summary-sig-arg">**attrDict</span>)</span><br />
Helper to create a validating parse action to be used with start tags
created with <code><a href="pyparsing-module.html#makeXMLTags"
class="link">makeXMLTags</a></code> or <code><a
href="pyparsing-module.html#makeHTMLTags"
class="link">makeHTMLTags</a></code>.</td>
<td align="right" valign="top">
<span class="codelink"><a href="pyparsing-pysrc.html#withAttribute">source code</a></span>
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr>
<td><span class="summary-sig"><a href="pyparsing-module.html#withClass" class="summary-sig-name">withClass</a>(<span class="summary-sig-arg">classname</span>,
<span class="summary-sig-arg">namespace</span>=<span class="summary-sig-default"><code class="variable-quote">'</code><code class="variable-string"></code><code class="variable-quote">'</code></span>)</span><br />
Simplified version of <code><a
href="pyparsing-module.html#withAttribute"
class="link">withAttribute</a></code> when matching on a div class -
made difficult because <code>class</code> is a reserved word in
Python.</td>
<td align="right" valign="top">
<span class="codelink"><a href="pyparsing-pysrc.html#withClass">source code</a></span>
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr>
<td><span class="summary-sig"><a href="pyparsing-module.html#infixNotation" class="summary-sig-name">infixNotation</a>(<span class="summary-sig-arg">baseExpr</span>,
<span class="summary-sig-arg">opList</span>,
<span class="summary-sig-arg">lpar</span>=<span class="summary-sig-default">Suppress:("(")</span>,
<span class="summary-sig-arg">rpar</span>=<span class="summary-sig-default">Suppress:(")")</span>)</span><br />
Helper method for constructing grammars of expressions made up of
operators working in a precedence hierarchy.</td>
<td align="right" valign="top">
<span class="codelink"><a href="pyparsing-pysrc.html#infixNotation">source code</a></span>
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr>
<td><span class="summary-sig"><a href="pyparsing-module.html#operatorPrecedence" class="summary-sig-name">operatorPrecedence</a>(<span class="summary-sig-arg">baseExpr</span>,
<span class="summary-sig-arg">opList</span>,
<span class="summary-sig-arg">lpar</span>=<span class="summary-sig-default">Suppress:("(")</span>,
<span class="summary-sig-arg">rpar</span>=<span class="summary-sig-default">Suppress:(")")</span>)</span><br />
(Deprecated) Former name of <code><a
href="pyparsing-module.html#infixNotation"
class="link">infixNotation</a></code>, will be dropped in a future
release.</td>
<td align="right" valign="top">
<span class="codelink"><a href="pyparsing-pysrc.html#infixNotation">source code</a></span>
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr>
<td><span class="summary-sig"><a href="pyparsing-module.html#nestedExpr" class="summary-sig-name">nestedExpr</a>(<span class="summary-sig-arg">opener</span>=<span class="summary-sig-default"><code class="variable-quote">'</code><code class="variable-string">(</code><code class="variable-quote">'</code></span>,
<span class="summary-sig-arg">closer</span>=<span class="summary-sig-default"><code class="variable-quote">'</code><code class="variable-string">)</code><code class="variable-quote">'</code></span>,
<span class="summary-sig-arg">content</span>=<span class="summary-sig-default">None</span>,
<span class="summary-sig-arg">ignoreExpr</span>=<span class="summary-sig-default">quotedString using single or double quotes</span>)</span><br />
Helper method for defining nested lists enclosed in opening and
closing delimiters ("(" and ")" are the default).</td>
<td align="right" valign="top">
<span class="codelink"><a href="pyparsing-pysrc.html#nestedExpr">source code</a></span>
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr>
<td><span class="summary-sig"><a href="pyparsing-module.html#indentedBlock" class="summary-sig-name">indentedBlock</a>(<span class="summary-sig-arg">blockStatementExpr</span>,
<span class="summary-sig-arg">indentStack</span>,
<span class="summary-sig-arg">indent</span>=<span class="summary-sig-default">True</span>)</span><br />
Helper method for defining space-delimited indentation blocks, such
as those used to define block statements in Python source code.</td>
<td align="right" valign="top">
<span class="codelink"><a href="pyparsing-pysrc.html#indentedBlock">source code</a></span>
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr>
<td><span class="summary-sig"><a name="replaceHTMLEntity"></a><span class="summary-sig-name">replaceHTMLEntity</span>(<span class="summary-sig-arg">t</span>)</span><br />
Helper parser action to replace common HTML entities with their
special characters</td>
<td align="right" valign="top">
<span class="codelink"><a href="pyparsing-pysrc.html#replaceHTMLEntity">source code</a></span>
</td>
</tr>
</table>
</td>
</tr>
</table>
<!-- ==================== VARIABLES ==================== -->
<a name="section-Variables"></a>
<table class="summary" border="1" cellpadding="3"
cellspacing="0" width="100%" bgcolor="white">
<tr bgcolor="#70b0f0" class="table-header">
<td align="left" colspan="2" class="table-header">
<span class="table-header">Variables</span></td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a name="alphas"></a><span class="summary-name">alphas</span> = <code title="'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz'"><code class="variable-quote">'</code><code class="variable-string">ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz</code><code class="variable-quote">'</code></code>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a name="nums"></a><span class="summary-name">nums</span> = <code title="'0123456789'"><code class="variable-quote">'</code><code class="variable-string">0123456789</code><code class="variable-quote">'</code></code>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a name="hexnums"></a><span class="summary-name">hexnums</span> = <code title="'0123456789ABCDEFabcdef'"><code class="variable-quote">'</code><code class="variable-string">0123456789ABCDEFabcdef</code><code class="variable-quote">'</code></code>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a href="pyparsing-module.html#alphanums" class="summary-name">alphanums</a> = <code title="'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789'"><code class="variable-quote">'</code><code class="variable-string">ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvw</code><code class="variable-ellipsis">...</code></code>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a href="pyparsing-module.html#printables" class="summary-name">printables</a> = <code title="'0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ!"#$%&\\
'()*+,-./:;<=>?@[\\]^_`{|}~'"><code class="variable-quote">'</code><code class="variable-string">0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKL</code><code class="variable-ellipsis">...</code></code>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a name="empty"></a><span class="summary-name">empty</span> = <code title="empty">empty</code>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a name="lineStart"></a><span class="summary-name">lineStart</span> = <code title="lineStart">lineStart</code>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a name="lineEnd"></a><span class="summary-name">lineEnd</span> = <code title="lineEnd">lineEnd</code>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a name="stringStart"></a><span class="summary-name">stringStart</span> = <code title="stringStart">stringStart</code>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a name="stringEnd"></a><span class="summary-name">stringEnd</span> = <code title="stringEnd">stringEnd</code>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a name="opAssoc"></a><span class="summary-name">opAssoc</span> = <code title="_Constants()">_Constants()</code>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a name="dblQuotedString"></a><span class="summary-name">dblQuotedString</span> = <code title="string enclosed in double quotes">string enclosed in double quotes</code>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a name="sglQuotedString"></a><span class="summary-name">sglQuotedString</span> = <code title="string enclosed in single quotes">string enclosed in single quotes</code>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a name="quotedString"></a><span class="summary-name">quotedString</span> = <code title="quotedString using single or double quotes">quotedString using single or double quotes</code>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a name="unicodeString"></a><span class="summary-name">unicodeString</span> = <code title="unicode string literal">unicode string literal</code>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a href="pyparsing-module.html#alphas8bit" class="summary-name">alphas8bit</a> = <code title="u'ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõöøùúûüýþÿ'"><code class="variable-quote">u'</code><code class="variable-string">ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖØÙÚÛÜÝÞßàáâãäåæçèéêëìíîï</code><code class="variable-ellipsis">...</code></code>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a name="punc8bit"></a><span class="summary-name">punc8bit</span> = <code title="u'¡¢£¤¥¦§¨©ª«¬­®¯°±²³´µ¶·¸¹º»¼½¾¿×÷'"><code class="variable-quote">u'</code><code class="variable-string">¡¢£¤¥¦§¨©ª«¬­®¯°±²³´µ¶·¸¹º»¼½¾¿×÷</code><code class="variable-quote">'</code></code>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a name="commonHTMLEntity"></a><span class="summary-name">commonHTMLEntity</span> = <code title="common HTML entity">common HTML entity</code>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a name="cStyleComment"></a><span class="summary-name">cStyleComment</span> = <code title="C style comment">C style comment</code><br />
Comment of the form <code>/* ... */</code>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a name="htmlComment"></a><span class="summary-name">htmlComment</span> = <code title="HTML comment">HTML comment</code><br />
Comment of the form <code><!-- ... --></code>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a name="restOfLine"></a><span class="summary-name">restOfLine</span> = <code title="rest of line">rest of line</code>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a name="dblSlashComment"></a><span class="summary-name">dblSlashComment</span> = <code title="// comment">// comment</code><br />
Comment of the form <code>// ... (to end of line)</code>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a name="cppStyleComment"></a><span class="summary-name">cppStyleComment</span> = <code title="C++ style comment">C++ style comment</code><br />
Comment of either form <code><a
href="pyparsing-module.html#cStyleComment"
class="link">cStyleComment</a></code> or <code><a
href="pyparsing-module.html#dblSlashComment"
class="link">dblSlashComment</a></code>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a name="javaStyleComment"></a><span class="summary-name">javaStyleComment</span> = <code title="C++ style comment">C++ style comment</code><br />
Same as <code><a href="pyparsing-module.html#cppStyleComment"
class="link">cppStyleComment</a></code>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a name="pythonStyleComment"></a><span class="summary-name">pythonStyleComment</span> = <code title="Python style comment">Python style comment</code><br />
Comment of the form <code># ... (to end of line)</code>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a href="pyparsing-module.html#commaSeparatedList" class="summary-name">commaSeparatedList</a> = <code title="commaSeparatedList">commaSeparatedList</code><br />
(Deprecated) Predefined expression of 1 or more printable words or
quoted strings, separated by commas.
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a name="anyCloseTag"></a><span class="summary-name">anyCloseTag</span> = <code title="</any tag>"></any tag></code>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a name="anyOpenTag"></a><span class="summary-name">anyOpenTag</span> = <code title="<any tag>"><any tag></code>
</td>
</tr>
</table>
<!-- ==================== FUNCTION DETAILS ==================== -->
<a name="section-FunctionDetails"></a>
<table class="details" border="1" cellpadding="3"
cellspacing="0" width="100%" bgcolor="white">
<tr bgcolor="#70b0f0" class="table-header">
<td align="left" colspan="2" class="table-header">
<span class="table-header">Function Details</span></td>
</tr>
</table>
<a name="col"></a>
<div>
<table class="details" border="1" cellpadding="3"
cellspacing="0" width="100%" bgcolor="white">
<tr><td>
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr valign="top"><td>
<h3 class="epydoc"><span class="sig"><span class="sig-name">col</span>(<span class="sig-arg">loc</span>,
<span class="sig-arg">strg</span>)</span>
</h3>
</td><td align="right" valign="top"
><span class="codelink"><a href="pyparsing-pysrc.html#col">source code</a></span>
</td>
</tr></table>
<p>Returns current column within a string, counting newlines as line
separators. The first column is number 1.</p>
<p>Note: the default parsing behavior is to expand tabs in the input
string before starting the parsing process. See <a
href="pyparsing.ParserElement-class.html#parseString"
class="link"><i>ParserElement.parseString</i></a> for more information on
parsing strings containing <code><TAB></code>s, and suggested
methods to maintain a consistent view of the parsed string, the parse
location, and line and column positions within the parsed string.</p>
<dl class="fields">
</dl>
</td></tr></table>
</div>
<a name="lineno"></a>
<div>
<table class="details" border="1" cellpadding="3"
cellspacing="0" width="100%" bgcolor="white">
<tr><td>
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr valign="top"><td>
<h3 class="epydoc"><span class="sig"><span class="sig-name">lineno</span>(<span class="sig-arg">loc</span>,
<span class="sig-arg">strg</span>)</span>
</h3>
</td><td align="right" valign="top"
><span class="codelink"><a href="pyparsing-pysrc.html#lineno">source code</a></span>
</td>
</tr></table>
<p>Returns current line number within a string, counting newlines as line
separators. The first line is number 1.</p>
<p>Note: the default parsing behavior is to expand tabs in the input
string before starting the parsing process. See <a
href="pyparsing.ParserElement-class.html#parseString"
class="link"><i>ParserElement.parseString</i></a> for more information on
parsing strings containing <code><TAB></code>s, and suggested
methods to maintain a consistent view of the parsed string, the parse
location, and line and column positions within the parsed string.</p>
<dl class="fields">
</dl>
</td></tr></table>
</div>
<a name="traceParseAction"></a>
<div>
<table class="details" border="1" cellpadding="3"
cellspacing="0" width="100%" bgcolor="white">
<tr><td>
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr valign="top"><td>
<h3 class="epydoc"><span class="sig"><span class="sig-name">traceParseAction</span>(<span class="sig-arg">f</span>)</span>
</h3>
</td><td align="right" valign="top"
><span class="codelink"><a href="pyparsing-pysrc.html#traceParseAction">source code</a></span>
</td>
</tr></table>
<p>Decorator for debugging parse actions.</p>
<p>When the parse action is called, this decorator will print
<code>">> entering
<i>method-name</i>(line:<i>current_source_line</i>,
<i>parse_location</i>, <i>matched_tokens</i>)".</code> When the
parse action completes, the decorator will print
<code>"<<"</code> followed by the returned value, or any
exception that the parse action raised.</p>
<p>Example:</p>
<pre class="literalblock">
wd = Word(alphas)
@traceParseAction
def remove_duplicate_chars(tokens):
return ''.join(sorted(set(''.join(tokens)))
wds = OneOrMore(wd).setParseAction(remove_duplicate_chars)
print(wds.parseString("slkdjs sld sldd sdlf sdljf"))
</pre>
<p>prints:</p>
<pre class="literalblock">
>>entering remove_duplicate_chars(line: 'slkdjs sld sldd sdlf sdljf', 0, (['slkdjs', 'sld', 'sldd', 'sdlf', 'sdljf'], {}))
<<leaving remove_duplicate_chars (ret: 'dfjkls')
['dfjkls']
</pre>
<dl class="fields">
</dl>
</td></tr></table>
</div>
<a name="delimitedList"></a>
<div>
<table class="details" border="1" cellpadding="3"
cellspacing="0" width="100%" bgcolor="white">
<tr><td>
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr valign="top"><td>
<h3 class="epydoc"><span class="sig"><span class="sig-name">delimitedList</span>(<span class="sig-arg">expr</span>,
<span class="sig-arg">delim</span>=<span class="sig-default"><code class="variable-quote">'</code><code class="variable-string">,</code><code class="variable-quote">'</code></span>,
<span class="sig-arg">combine</span>=<span class="sig-default">False</span>)</span>
</h3>
</td><td align="right" valign="top"
><span class="codelink"><a href="pyparsing-pysrc.html#delimitedList">source code</a></span>
</td>
</tr></table>
<p>Helper to define a delimited list of expressions - the delimiter
defaults to ','. By default, the list elements and delimiters can have
intervening whitespace, and comments, but this can be overridden by
passing <code>combine=True</code> in the constructor. If
<code>combine</code> is set to <code>True</code>, the matching tokens are
returned as a single token string, with the delimiters included;
otherwise, the matching tokens are returned as a list of tokens, with the
delimiters suppressed.</p>
<p>Example:</p>
<pre class="literalblock">
delimitedList(Word(alphas)).parseString("aa,bb,cc") # -> ['aa', 'bb', 'cc']
delimitedList(Word(hexnums), delim=':', combine=True).parseString("AA:BB:CC:DD:EE") # -> ['AA:BB:CC:DD:EE']
</pre>
<dl class="fields">
</dl>
</td></tr></table>
</div>
<a name="countedArray"></a>
<div>
<table class="details" border="1" cellpadding="3"
cellspacing="0" width="100%" bgcolor="white">
<tr><td>
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr valign="top"><td>
<h3 class="epydoc"><span class="sig"><span class="sig-name">countedArray</span>(<span class="sig-arg">expr</span>,
<span class="sig-arg">intExpr</span>=<span class="sig-default">None</span>)</span>
</h3>
</td><td align="right" valign="top"
><span class="codelink"><a href="pyparsing-pysrc.html#countedArray">source code</a></span>
</td>
</tr></table>
<p>Helper to define a counted list of expressions. This helper defines a
pattern of the form:</p>
<pre class="literalblock">
integer expr expr expr...
</pre>
<p>where the leading integer tells how many expr expressions follow. The
matched tokens returns the array of expr tokens as a list - the leading
count token is suppressed.</p>
<p>If <code>intExpr</code> is specified, it should be a pyparsing
expression that produces an integer value.</p>
<p>Example:</p>
<pre class="literalblock">
countedArray(Word(alphas)).parseString('2 ab cd ef') # -> ['ab', 'cd']
# in this parser, the leading integer value is given in binary,
# '10' indicating that 2 values are in the array
binaryConstant = Word('01').setParseAction(lambda t: int(t[0], 2))
countedArray(Word(alphas), intExpr=binaryConstant).parseString('10 ab cd ef') # -> ['ab', 'cd']
</pre>
<dl class="fields">
</dl>
</td></tr></table>
</div>
<a name="matchPreviousLiteral"></a>
<div>
<table class="details" border="1" cellpadding="3"
cellspacing="0" width="100%" bgcolor="white">
<tr><td>
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr valign="top"><td>
<h3 class="epydoc"><span class="sig"><span class="sig-name">matchPreviousLiteral</span>(<span class="sig-arg">expr</span>)</span>
</h3>
</td><td align="right" valign="top"
><span class="codelink"><a href="pyparsing-pysrc.html#matchPreviousLiteral">source code</a></span>
</td>
</tr></table>
<p>Helper to define an expression that is indirectly defined from the
tokens matched in a previous expression, that is, it looks for a 'repeat'
of a previous expression. For example:</p>
<pre class="literalblock">
first = Word(nums)
second = matchPreviousLiteral(first)
matchExpr = first + ":" + second
</pre>
<p>will match <code>"1:1"</code>, but not
<code>"1:2"</code>. Because this matches a previous literal,
will also match the leading <code>"1:1"</code> in
<code>"1:10"</code>. If this is not desired, use
<code>matchPreviousExpr</code>. Do <i>not</i> use with packrat parsing
enabled.</p>
<dl class="fields">
</dl>
</td></tr></table>
</div>
<a name="matchPreviousExpr"></a>
<div>
<table class="details" border="1" cellpadding="3"
cellspacing="0" width="100%" bgcolor="white">
<tr><td>
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr valign="top"><td>
<h3 class="epydoc"><span class="sig"><span class="sig-name">matchPreviousExpr</span>(<span class="sig-arg">expr</span>)</span>
</h3>
</td><td align="right" valign="top"
><span class="codelink"><a href="pyparsing-pysrc.html#matchPreviousExpr">source code</a></span>
</td>
</tr></table>
<p>Helper to define an expression that is indirectly defined from the
tokens matched in a previous expression, that is, it looks for a 'repeat'
of a previous expression. For example:</p>
<pre class="literalblock">
first = Word(nums)
second = matchPreviousExpr(first)
matchExpr = first + ":" + second
</pre>
<p>will match <code>"1:1"</code>, but not
<code>"1:2"</code>. Because this matches by expressions, will
<i>not</i> match the leading <code>"1:1"</code> in
<code>"1:10"</code>; the expressions are evaluated first, and
then compared, so <code>"1"</code> is compared with
<code>"10"</code>. Do <i>not</i> use with packrat parsing
enabled.</p>
<dl class="fields">
</dl>
</td></tr></table>
</div>
<a name="oneOf"></a>
<div>
<table class="details" border="1" cellpadding="3"
cellspacing="0" width="100%" bgcolor="white">
<tr><td>
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr valign="top"><td>
<h3 class="epydoc"><span class="sig"><span class="sig-name">oneOf</span>(<span class="sig-arg">strs</span>,
<span class="sig-arg">caseless</span>=<span class="sig-default">False</span>,
<span class="sig-arg">useRegex</span>=<span class="sig-default">True</span>)</span>
</h3>
</td><td align="right" valign="top"
><span class="codelink"><a href="pyparsing-pysrc.html#oneOf">source code</a></span>
</td>
</tr></table>
<p>Helper to quickly define a set of alternative Literals, and makes sure
to do longest-first testing when there is a conflict, regardless of the
input order, but returns a <code><a
href="pyparsing.MatchFirst-class.html" class="link">MatchFirst</a></code>
for best performance.</p>
<p>Parameters:</p>
<ul>
<li>
strs - a string of space-delimited literals, or a collection of
string literals
</li>
<li>
caseless - (default=<code>False</code>) - treat all literals as
caseless
</li>
<li>
useRegex - (default=<code>True</code>) - as an optimization, will
generate a Regex object; otherwise, will generate a
<code>MatchFirst</code> object (if <code>caseless=True</code>, or if
creating a <code>Regex</code> raises an exception)
</li>
</ul>
<p>Example:</p>
<pre class="literalblock">
comp_oper = oneOf("< = > <= >= !=")
var = Word(alphas)
number = Word(nums)
term = var | number
comparison_expr = term + comp_oper + term
print(comparison_expr.searchString("B = 12 AA=23 B<=AA AA>12"))
</pre>
<p>prints:</p>
<pre class="literalblock">
[['B', '=', '12'], ['AA', '=', '23'], ['B', '<=', 'AA'], ['AA', '>', '12']]
</pre>
<dl class="fields">
</dl>
</td></tr></table>
</div>
<a name="dictOf"></a>
<div>
<table class="details" border="1" cellpadding="3"
cellspacing="0" width="100%" bgcolor="white">
<tr><td>
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr valign="top"><td>
<h3 class="epydoc"><span class="sig"><span class="sig-name">dictOf</span>(<span class="sig-arg">key</span>,
<span class="sig-arg">value</span>)</span>
</h3>
</td><td align="right" valign="top"
><span class="codelink"><a href="pyparsing-pysrc.html#dictOf">source code</a></span>
</td>
</tr></table>
<p>Helper to easily and clearly define a dictionary by specifying the
respective patterns for the key and value. Takes care of defining the
<code><a href="pyparsing.Dict-class.html" class="link">Dict</a></code>,
<code><a href="pyparsing.ZeroOrMore-class.html"
class="link">ZeroOrMore</a></code>, and <code><a
href="pyparsing.Group-class.html" class="link">Group</a></code> tokens in
the proper order. The key pattern can include delimiting markers or
punctuation, as long as they are suppressed, thereby leaving the
significant key text. The value pattern can include named results, so
that the <code>Dict</code> results can include named token fields.</p>
<p>Example:</p>
<pre class="literalblock">
text = "shape: SQUARE posn: upper left color: light blue texture: burlap"
attr_expr = (label + Suppress(':') + OneOrMore(data_word, stopOn=label).setParseAction(' '.join))
print(OneOrMore(attr_expr).parseString(text).dump())
attr_label = label
attr_value = Suppress(':') + OneOrMore(data_word, stopOn=label).setParseAction(' '.join)
# similar to Dict, but simpler call format
result = dictOf(attr_label, attr_value).parseString(text)
print(result.dump())
print(result['shape'])
print(result.shape) # object attribute access works too
print(result.asDict())
</pre>
<p>prints:</p>
<pre class="literalblock">
[['shape', 'SQUARE'], ['posn', 'upper left'], ['color', 'light blue'], ['texture', 'burlap']]
- color: light blue
- posn: upper left
- shape: SQUARE
- texture: burlap
SQUARE
SQUARE
{'color': 'light blue', 'shape': 'SQUARE', 'posn': 'upper left', 'texture': 'burlap'}
</pre>
<dl class="fields">
</dl>
</td></tr></table>
</div>
<a name="originalTextFor"></a>
<div>
<table class="details" border="1" cellpadding="3"
cellspacing="0" width="100%" bgcolor="white">
<tr><td>
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr valign="top"><td>
<h3 class="epydoc"><span class="sig"><span class="sig-name">originalTextFor</span>(<span class="sig-arg">expr</span>,
<span class="sig-arg">asString</span>=<span class="sig-default">True</span>)</span>
</h3>
</td><td align="right" valign="top"
><span class="codelink"><a href="pyparsing-pysrc.html#originalTextFor">source code</a></span>
</td>
</tr></table>
<p>Helper to return the original, untokenized text for a given
expression. Useful to restore the parsed fields of an HTML start tag
into the raw tag text itself, or to revert separate tokens with
intervening whitespace back to the original matching input text. By
default, returns astring containing the original parsed text.</p>
<p>If the optional <code>asString</code> argument is passed as
<code>False</code>, then the return value is a <code><a
href="pyparsing.ParseResults-class.html"
class="link">ParseResults</a></code> containing any results names that
were originally matched, and a single token containing the original
matched text from the input string. So if the expression passed to
<code><a href="pyparsing-module.html#originalTextFor"
class="link">originalTextFor</a></code> contains expressions with defined
results names, you must set <code>asString</code> to <code>False</code>
if you want to preserve those results name values.</p>
<p>Example:</p>
<pre class="literalblock">
src = "this is test <b> bold <i>text</i> </b> normal text "
for tag in ("b","i"):
opener,closer = makeHTMLTags(tag)
patt = originalTextFor(opener + SkipTo(closer) + closer)
print(patt.searchString(src)[0])
</pre>
<p>prints:</p>
<pre class="literalblock">
['<b> bold <i>text</i> </b>']
['<i>text</i>']
</pre>
<dl class="fields">
</dl>
</td></tr></table>
</div>
<a name="locatedExpr"></a>
<div>
<table class="details" border="1" cellpadding="3"
cellspacing="0" width="100%" bgcolor="white">
<tr><td>
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr valign="top"><td>
<h3 class="epydoc"><span class="sig"><span class="sig-name">locatedExpr</span>(<span class="sig-arg">expr</span>)</span>
</h3>
</td><td align="right" valign="top"
><span class="codelink"><a href="pyparsing-pysrc.html#locatedExpr">source code</a></span>
</td>
</tr></table>
<p>Helper to decorate a returned token with its starting and ending
locations in the input string. This helper adds the following results
names:</p>
<ul>
<li>
locn_start = location where matched expression begins
</li>
<li>
locn_end = location where matched expression ends
</li>
<li>
value = the actual parsed results
</li>
</ul>
<p>Be careful if the input text contains <code><TAB></code>
characters, you may want to call <code><a
href="pyparsing.ParserElement-class.html#parseWithTabs"
class="link">ParserElement.parseWithTabs</a></code></p>
<p>Example:</p>
<pre class="literalblock">
wd = Word(alphas)
for match in locatedExpr(wd).searchString("ljsdf123lksdjjf123lkkjj1222"):
print(match)
</pre>
<p>prints:</p>
<pre class="literalblock">
[[0, 'ljsdf', 5]]
[[8, 'lksdjjf', 15]]
[[18, 'lkkjj', 23]]
</pre>
<dl class="fields">
</dl>
</td></tr></table>
</div>
<a name="srange"></a>
<div>
<table class="details" border="1" cellpadding="3"
cellspacing="0" width="100%" bgcolor="white">
<tr><td>
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr valign="top"><td>
<h3 class="epydoc"><span class="sig"><span class="sig-name">srange</span>(<span class="sig-arg">s</span>)</span>
</h3>
</td><td align="right" valign="top"
><span class="codelink"><a href="pyparsing-pysrc.html#srange">source code</a></span>
</td>
</tr></table>
<p>Helper to easily define string ranges for use in Word construction.
Borrows syntax from regexp '[]' string range definitions:</p>
<pre class="literalblock">
srange("[0-9]") -> "0123456789"
srange("[a-z]") -> "abcdefghijklmnopqrstuvwxyz"
srange("[a-z$_]") -> "abcdefghijklmnopqrstuvwxyz$_"
</pre>
<p>The input string must be enclosed in []'s, and the returned string is
the expanded character set joined into a single string. The values
enclosed in the []'s may be:</p>
<ul>
<li>
a single character
</li>
<li>
an escaped character with a leading backslash (such as
<code>\-</code> or <code>\]</code>)
</li>
<li>
an escaped hex character with a leading <code>'\x'</code>
(<code>\x21</code>, which is a <code>'!'</code> character)
(<code>\0x##</code> is also supported for backwards compatibility)
</li>
<li>
an escaped octal character with a leading <code>'\0'</code>
(<code>\041</code>, which is a <code>'!'</code> character)
</li>
<li>
a range of any of the above, separated by a dash (<code>'a-z'</code>,
etc.)
</li>
<li>
any combination of the above (<code>'aeiouy'</code>,
<code>'a-zA-Z0-9_$'</code>, etc.)
</li>
</ul>
<dl class="fields">
</dl>
</td></tr></table>
</div>
<a name="replaceWith"></a>
<div>
<table class="details" border="1" cellpadding="3"
cellspacing="0" width="100%" bgcolor="white">
<tr><td>
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr valign="top"><td>
<h3 class="epydoc"><span class="sig"><span class="sig-name">replaceWith</span>(<span class="sig-arg">replStr</span>)</span>
</h3>
</td><td align="right" valign="top"
><span class="codelink"><a href="pyparsing-pysrc.html#replaceWith">source code</a></span>
</td>
</tr></table>
<p>Helper method for common parse actions that simply return a literal
value. Especially useful when used with <code><a
href="pyparsing.ParserElement-class.html#transformString"
class="link">transformString</a>()</code>.</p>
<p>Example:</p>
<pre class="literalblock">
num = Word(nums).setParseAction(lambda toks: int(toks[0]))
na = oneOf("N/A NA").setParseAction(replaceWith(math.nan))
term = na | num
OneOrMore(term).parseString("324 234 N/A 234") # -> [324, 234, nan, 234]
</pre>
<dl class="fields">
</dl>
</td></tr></table>
</div>
<a name="removeQuotes"></a>
<div>
<table class="details" border="1" cellpadding="3"
cellspacing="0" width="100%" bgcolor="white">
<tr><td>
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr valign="top"><td>
<h3 class="epydoc"><span class="sig"><span class="sig-name">removeQuotes</span>(<span class="sig-arg">s</span>,
<span class="sig-arg">l</span>,
<span class="sig-arg">t</span>)</span>
</h3>
</td><td align="right" valign="top"
><span class="codelink"><a href="pyparsing-pysrc.html#removeQuotes">source code</a></span>
</td>
</tr></table>
<p>Helper parse action for removing quotation marks from parsed quoted
strings.</p>
<p>Example:</p>
<pre class="literalblock">
# by default, quotation marks are included in parsed results
quotedString.parseString("'Now is the Winter of our Discontent'") # -> ["'Now is the Winter of our Discontent'"]
# use removeQuotes to strip quotation marks from parsed results
quotedString.setParseAction(removeQuotes)
quotedString.parseString("'Now is the Winter of our Discontent'") # -> ["Now is the Winter of our Discontent"]
</pre>
<dl class="fields">
</dl>
</td></tr></table>
</div>
<a name="tokenMap"></a>
<div>
<table class="details" border="1" cellpadding="3"
cellspacing="0" width="100%" bgcolor="white">
<tr><td>
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr valign="top"><td>
<h3 class="epydoc"><span class="sig"><span class="sig-name">tokenMap</span>(<span class="sig-arg">func</span>,
<span class="sig-arg">*args</span>)</span>
</h3>
</td><td align="right" valign="top"
><span class="codelink"><a href="pyparsing-pysrc.html#tokenMap">source code</a></span>
</td>
</tr></table>
<p>Helper to define a parse action by mapping a function to all elements
of a ParseResults list.If any additional args are passed, they are
forwarded to the given function as additional arguments after the token,
as in <code>hex_integer = Word(hexnums).setParseAction(tokenMap(int,
16))</code>, which will convert the parsed data to an integer using base
16.</p>
<p>Example (compare the last to example in <a
href="pyparsing.ParserElement-class.html#transformString"
class="link">ParserElement.transformString</a>:</p>
<pre class="literalblock">
hex_ints = OneOrMore(Word(hexnums)).setParseAction(tokenMap(int, 16))
hex_ints.runTests('''
00 11 22 aa FF 0a 0d 1a
''')
upperword = Word(alphas).setParseAction(tokenMap(str.upper))
OneOrMore(upperword).runTests('''
my kingdom for a horse
''')
wd = Word(alphas).setParseAction(tokenMap(str.title))
OneOrMore(wd).setParseAction(' '.join).runTests('''
now is the winter of our discontent made glorious summer by this sun of york
''')
</pre>
<p>prints:</p>
<pre class="literalblock">
00 11 22 aa FF 0a 0d 1a
[0, 17, 34, 170, 255, 10, 13, 26]
my kingdom for a horse
['MY', 'KINGDOM', 'FOR', 'A', 'HORSE']
now is the winter of our discontent made glorious summer by this sun of york
['Now Is The Winter Of Our Discontent Made Glorious Summer By This Sun Of York']
</pre>
<dl class="fields">
</dl>
</td></tr></table>
</div>
<a name="upcaseTokens"></a>
<div>
<table class="details" border="1" cellpadding="3"
cellspacing="0" width="100%" bgcolor="white">
<tr><td>
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr valign="top"><td>
<h3 class="epydoc"><span class="sig"><span class="sig-name">upcaseTokens</span>(<span class="sig-arg">s</span>,
<span class="sig-arg">l</span>,
<span class="sig-arg">t</span>)</span>
</h3>
</td><td align="right" valign="top"
><span class="codelink"><a href="pyparsing-pysrc.html#upcaseTokens">source code</a></span>
</td>
</tr></table>
<p>(Deprecated) Helper parse action to convert tokens to upper case.
Deprecated in favor of <a
href="pyparsing.pyparsing_common-class.html#upcaseTokens"
class="link">pyparsing_common.upcaseTokens</a></p>
<dl class="fields">
</dl>
</td></tr></table>
</div>
<a name="downcaseTokens"></a>
<div>
<table class="details" border="1" cellpadding="3"
cellspacing="0" width="100%" bgcolor="white">
<tr><td>
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr valign="top"><td>
<h3 class="epydoc"><span class="sig"><span class="sig-name">downcaseTokens</span>(<span class="sig-arg">s</span>,
<span class="sig-arg">l</span>,
<span class="sig-arg">t</span>)</span>
</h3>
</td><td align="right" valign="top"
><span class="codelink"><a href="pyparsing-pysrc.html#downcaseTokens">source code</a></span>
</td>
</tr></table>
<p>(Deprecated) Helper parse action to convert tokens to lower case.
Deprecated in favor of <a
href="pyparsing.pyparsing_common-class.html#downcaseTokens"
class="link">pyparsing_common.downcaseTokens</a></p>
<dl class="fields">
</dl>
</td></tr></table>
</div>
<a name="makeHTMLTags"></a>
<div>
<table class="details" border="1" cellpadding="3"
cellspacing="0" width="100%" bgcolor="white">
<tr><td>
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr valign="top"><td>
<h3 class="epydoc"><span class="sig"><span class="sig-name">makeHTMLTags</span>(<span class="sig-arg">tagStr</span>)</span>
</h3>
</td><td align="right" valign="top"
><span class="codelink"><a href="pyparsing-pysrc.html#makeHTMLTags">source code</a></span>
</td>
</tr></table>
<p>Helper to construct opening and closing tag expressions for HTML,
given a tag name. Matches tags in either upper or lower case, attributes
with namespaces and with quoted or unquoted values.</p>
<p>Example:</p>
<pre class="literalblock">
text = '<td>More info at the <a href="http://pyparsing.wikispaces.com">pyparsing</a> wiki page</td>'
# makeHTMLTags returns pyparsing expressions for the opening and closing tags as a 2-tuple
a,a_end = makeHTMLTags("A")
link_expr = a + SkipTo(a_end)("link_text") + a_end
for link in link_expr.searchString(text):
# attributes in the <A> tag (like "href" shown here) are also accessible as named results
print(link.link_text, '->', link.href)
</pre>
<p>prints:</p>
<pre class="literalblock">
pyparsing -> http://pyparsing.wikispaces.com
</pre>
<dl class="fields">
</dl>
</td></tr></table>
</div>
<a name="makeXMLTags"></a>
<div>
<table class="details" border="1" cellpadding="3"
cellspacing="0" width="100%" bgcolor="white">
<tr><td>
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr valign="top"><td>
<h3 class="epydoc"><span class="sig"><span class="sig-name">makeXMLTags</span>(<span class="sig-arg">tagStr</span>)</span>
</h3>
</td><td align="right" valign="top"
><span class="codelink"><a href="pyparsing-pysrc.html#makeXMLTags">source code</a></span>
</td>
</tr></table>
<p>Helper to construct opening and closing tag expressions for XML, given
a tag name. Matches tags only in the given upper/lower case.</p>
<p>Example: similar to <a href="pyparsing-module.html#makeHTMLTags"
class="link">makeHTMLTags</a></p>
<dl class="fields">
</dl>
</td></tr></table>
</div>
<a name="withAttribute"></a>
<div>
<table class="details" border="1" cellpadding="3"
cellspacing="0" width="100%" bgcolor="white">
<tr><td>
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr valign="top"><td>
<h3 class="epydoc"><span class="sig"><span class="sig-name">withAttribute</span>(<span class="sig-arg">*args</span>,
<span class="sig-arg">**attrDict</span>)</span>
</h3>
</td><td align="right" valign="top"
><span class="codelink"><a href="pyparsing-pysrc.html#withAttribute">source code</a></span>
</td>
</tr></table>
<p>Helper to create a validating parse action to be used with start tags
created with <code><a href="pyparsing-module.html#makeXMLTags"
class="link">makeXMLTags</a></code> or <code><a
href="pyparsing-module.html#makeHTMLTags"
class="link">makeHTMLTags</a></code>. Use <code>withAttribute</code> to
qualify a starting tag with a required attribute value, to avoid false
matches on common tags such as <code><TD></code> or
<code><DIV></code>.</p>
<p>Call <code>withAttribute</code> with a series of attribute names and
values. Specify the list of filter attributes names and values as:</p>
<ul>
<li>
keyword arguments, as in <code>(align="right")</code>, or
</li>
<li>
as an explicit dict with <code>**</code> operator, when an attribute
name is also a Python reserved word, as in
<code>**{"class":"Customer",
"align":"right"}</code>
</li>
<li>
a list of name-value tuples, as in ( ("ns1:class",
"Customer"), ("ns2:align","right") )
</li>
</ul>
<p>For attribute names with a namespace prefix, you must use the second
form. Attribute names are matched insensitive to upper/lower case.</p>
<p>If just testing for <code>class</code> (with or without a namespace),
use <code><a href="pyparsing-module.html#withClass"
class="link">withClass</a></code>.</p>
<p>To verify that the attribute exists, but without specifying a value,
pass <code>withAttribute.ANY_VALUE</code> as the value.</p>
<p>Example:</p>
<pre class="literalblock">
html = '''
<div>
Some text
<div type="grid">1 4 0 1 0</div>
<div type="graph">1,3 2,3 1,1</div>
<div>this has no type</div>
</div>
'''
div,div_end = makeHTMLTags("div")
# only match div tag having a type attribute with value "grid"
div_grid = div().setParseAction(withAttribute(type="grid"))
grid_expr = div_grid + SkipTo(div | div_end)("body")
for grid_header in grid_expr.searchString(html):
print(grid_header.body)
# construct a match with any div tag having a type attribute, regardless of the value
div_any_type = div().setParseAction(withAttribute(type=withAttribute.ANY_VALUE))
div_expr = div_any_type + SkipTo(div | div_end)("body")
for div_header in div_expr.searchString(html):
print(div_header.body)
</pre>
<p>prints:</p>
<pre class="literalblock">
1 4 0 1 0
1 4 0 1 0
1,3 2,3 1,1
</pre>
<dl class="fields">
</dl>
</td></tr></table>
</div>
<a name="withClass"></a>
<div>
<table class="details" border="1" cellpadding="3"
cellspacing="0" width="100%" bgcolor="white">
<tr><td>
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr valign="top"><td>
<h3 class="epydoc"><span class="sig"><span class="sig-name">withClass</span>(<span class="sig-arg">classname</span>,
<span class="sig-arg">namespace</span>=<span class="sig-default"><code class="variable-quote">'</code><code class="variable-string"></code><code class="variable-quote">'</code></span>)</span>
</h3>
</td><td align="right" valign="top"
><span class="codelink"><a href="pyparsing-pysrc.html#withClass">source code</a></span>
</td>
</tr></table>
<p>Simplified version of <code><a
href="pyparsing-module.html#withAttribute"
class="link">withAttribute</a></code> when matching on a div class - made
difficult because <code>class</code> is a reserved word in Python.</p>
<p>Example:</p>
<pre class="literalblock">
html = '''
<div>
Some text
<div class="grid">1 4 0 1 0</div>
<div class="graph">1,3 2,3 1,1</div>
<div>this &lt;div&gt; has no class</div>
</div>
'''
div,div_end = makeHTMLTags("div")
div_grid = div().setParseAction(withClass("grid"))
grid_expr = div_grid + SkipTo(div | div_end)("body")
for grid_header in grid_expr.searchString(html):
print(grid_header.body)
div_any_type = div().setParseAction(withClass(withAttribute.ANY_VALUE))
div_expr = div_any_type + SkipTo(div | div_end)("body")
for div_header in div_expr.searchString(html):
print(div_header.body)
</pre>
<p>prints:</p>
<pre class="literalblock">
1 4 0 1 0
1 4 0 1 0
1,3 2,3 1,1
</pre>
<dl class="fields">
</dl>
</td></tr></table>
</div>
<a name="infixNotation"></a>
<div>
<table class="details" border="1" cellpadding="3"
cellspacing="0" width="100%" bgcolor="white">
<tr><td>
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr valign="top"><td>
<h3 class="epydoc"><span class="sig"><span class="sig-name">infixNotation</span>(<span class="sig-arg">baseExpr</span>,
<span class="sig-arg">opList</span>,
<span class="sig-arg">lpar</span>=<span class="sig-default">Suppress:("(")</span>,
<span class="sig-arg">rpar</span>=<span class="sig-default">Suppress:(")")</span>)</span>
</h3>
</td><td align="right" valign="top"
><span class="codelink"><a href="pyparsing-pysrc.html#infixNotation">source code</a></span>
</td>
</tr></table>
<p>Helper method for constructing grammars of expressions made up of
operators working in a precedence hierarchy. Operators may be unary or
binary, left- or right-associative. Parse actions can also be attached
to operator expressions. The generated parser will also recognize the use
of parentheses to override operator precedences (see example below).</p>
<p>Note: if you define a deep operator list, you may see performance
issues when using infixNotation. See <a
href="pyparsing.ParserElement-class.html#enablePackrat"
class="link">ParserElement.enablePackrat</a> for a mechanism to
potentially improve your parser performance.</p>
<p>Parameters:</p>
<ul>
<li>
baseExpr - expression representing the most basic element for the
nested
</li>
<li>
opList - list of tuples, one for each operator precedence level in
the expression grammar; each tuple is of the form (opExpr, numTerms,
rightLeftAssoc, parseAction), where:
<ul>
<li>
opExpr is the pyparsing expression for the operator; may also be
a string, which will be converted to a Literal; if numTerms is 3,
opExpr is a tuple of two expressions, for the two operators
separating the 3 terms
</li>
<li>
numTerms is the number of terms for this operator (must be 1, 2,
or 3)
</li>
<li>
rightLeftAssoc is the indicator whether the operator is right or
left associative, using the pyparsing-defined constants
<code>opAssoc.RIGHT</code> and <code>opAssoc.LEFT</code>.
</li>
<li>
parseAction is the parse action to be associated with expressions
matching this operator expression (the parse action tuple member
may be omitted); if the parse action is passed a tuple or list of
functions, this is equivalent to calling
<code>setParseAction(*fn)</code> (<a
href="pyparsing.ParserElement-class.html#setParseAction"
class="link">ParserElement.setParseAction</a>)
</li>
</ul>
</li>
<li>
lpar - expression for matching left-parentheses
(default=<code>Suppress('(')</code>)
</li>
<li>
rpar - expression for matching right-parentheses
(default=<code>Suppress(')')</code>)
</li>
</ul>
<p>Example:</p>
<pre class="literalblock">
# simple example of four-function arithmetic with ints and variable names
integer = pyparsing_common.signed_integer
varname = pyparsing_common.identifier
arith_expr = infixNotation(integer | varname,
[
('-', 1, opAssoc.RIGHT),
(oneOf('* /'), 2, opAssoc.LEFT),
(oneOf('+ -'), 2, opAssoc.LEFT),
])
arith_expr.runTests('''
5+3*6
(5+3)*6
-2--11
''', fullDump=False)
</pre>
<p>prints:</p>
<pre class="literalblock">
5+3*6
[[5, '+', [3, '*', 6]]]
(5+3)*6
[[[5, '+', 3], '*', 6]]
-2--11
[[['-', 2], '-', ['-', 11]]]
</pre>
<dl class="fields">
</dl>
</td></tr></table>
</div>
<a name="operatorPrecedence"></a>
<div>
<table class="details" border="1" cellpadding="3"
cellspacing="0" width="100%" bgcolor="white">
<tr><td>
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr valign="top"><td>
<h3 class="epydoc"><span class="sig"><span class="sig-name">operatorPrecedence</span>(<span class="sig-arg">baseExpr</span>,
<span class="sig-arg">opList</span>,
<span class="sig-arg">lpar</span>=<span class="sig-default">Suppress:("(")</span>,
<span class="sig-arg">rpar</span>=<span class="sig-default">Suppress:(")")</span>)</span>
</h3>
</td><td align="right" valign="top"
><span class="codelink"><a href="pyparsing-pysrc.html#infixNotation">source code</a></span>
</td>
</tr></table>
<p>(Deprecated) Former name of <code><a
href="pyparsing-module.html#infixNotation"
class="link">infixNotation</a></code>, will be dropped in a future
release.</p>
<dl class="fields">
</dl>
</td></tr></table>
</div>
<a name="nestedExpr"></a>
<div>
<table class="details" border="1" cellpadding="3"
cellspacing="0" width="100%" bgcolor="white">
<tr><td>
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr valign="top"><td>
<h3 class="epydoc"><span class="sig"><span class="sig-name">nestedExpr</span>(<span class="sig-arg">opener</span>=<span class="sig-default"><code class="variable-quote">'</code><code class="variable-string">(</code><code class="variable-quote">'</code></span>,
<span class="sig-arg">closer</span>=<span class="sig-default"><code class="variable-quote">'</code><code class="variable-string">)</code><code class="variable-quote">'</code></span>,
<span class="sig-arg">content</span>=<span class="sig-default">None</span>,
<span class="sig-arg">ignoreExpr</span>=<span class="sig-default">quotedString using single or double quotes</span>)</span>
</h3>
</td><td align="right" valign="top"
><span class="codelink"><a href="pyparsing-pysrc.html#nestedExpr">source code</a></span>
</td>
</tr></table>
<p>Helper method for defining nested lists enclosed in opening and
closing delimiters ("(" and ")" are the default).</p>
<p>Parameters:</p>
<ul>
<li>
opener - opening character for a nested list
(default=<code>"("</code>); can also be a pyparsing
expression
</li>
<li>
closer - closing character for a nested list
(default=<code>")"</code>); can also be a pyparsing
expression
</li>
<li>
content - expression for items within the nested lists
(default=<code>None</code>)
</li>
<li>
ignoreExpr - expression for ignoring opening and closing delimiters
(default=<code>quotedString</code>)
</li>
</ul>
<p>If an expression is not provided for the content argument, the nested
expression will capture all whitespace-delimited content between
delimiters as a list of separate values.</p>
<p>Use the <code>ignoreExpr</code> argument to define expressions that
may contain opening or closing characters that should not be treated as
opening or closing characters for nesting, such as quotedString or a
comment expression. Specify multiple expressions using an <code><a
href="pyparsing.Or-class.html" class="link">Or</a></code> or <code><a
href="pyparsing.MatchFirst-class.html"
class="link">MatchFirst</a></code>. The default is <a
href="pyparsing-module.html#quotedString" class="link">quotedString</a>,
but if no expressions are to be ignored, then pass <code>None</code> for
this argument.</p>
<p>Example:</p>
<pre class="literalblock">
data_type = oneOf("void int short long char float double")
decl_data_type = Combine(data_type + Optional(Word('*')))
ident = Word(alphas+'_', alphanums+'_')
number = pyparsing_common.number
arg = Group(decl_data_type + ident)
LPAR,RPAR = map(Suppress, "()")
code_body = nestedExpr('{', '}', ignoreExpr=(quotedString | cStyleComment))
c_function = (decl_data_type("type")
+ ident("name")
+ LPAR + Optional(delimitedList(arg), [])("args") + RPAR
+ code_body("body"))
c_function.ignore(cStyleComment)
source_code = '''
int is_odd(int x) {
return (x%2);
}
int dec_to_hex(char hchar) {
if (hchar >= '0' && hchar <= '9') {
return (ord(hchar)-ord('0'));
} else {
return (10+ord(hchar)-ord('A'));
}
}
'''
for func in c_function.searchString(source_code):
print("%(name)s (%(type)s) args: %(args)s" % func)
</pre>
<p>prints:</p>
<pre class="literalblock">
is_odd (int) args: [['int', 'x']]
dec_to_hex (int) args: [['char', 'hchar']]
</pre>
<dl class="fields">
</dl>
</td></tr></table>
</div>
<a name="indentedBlock"></a>
<div>
<table class="details" border="1" cellpadding="3"
cellspacing="0" width="100%" bgcolor="white">
<tr><td>
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr valign="top"><td>
<h3 class="epydoc"><span class="sig"><span class="sig-name">indentedBlock</span>(<span class="sig-arg">blockStatementExpr</span>,
<span class="sig-arg">indentStack</span>,
<span class="sig-arg">indent</span>=<span class="sig-default">True</span>)</span>
</h3>
</td><td align="right" valign="top"
><span class="codelink"><a href="pyparsing-pysrc.html#indentedBlock">source code</a></span>
</td>
</tr></table>
<p>Helper method for defining space-delimited indentation blocks, such as
those used to define block statements in Python source code.</p>
<p>Parameters:</p>
<ul>
<li>
blockStatementExpr - expression defining syntax of statement that is
repeated within the indented block
</li>
<li>
indentStack - list created by caller to manage indentation stack
(multiple statementWithIndentedBlock expressions within a single
grammar should share a common indentStack)
</li>
<li>
indent - boolean indicating whether block must be indented beyond the
the current level; set to False for block of left-most statements
(default=<code>True</code>)
</li>
</ul>
<p>A valid block must contain at least one
<code>blockStatement</code>.</p>
<p>Example:</p>
<pre class="literalblock">
data = '''
def A(z):
A1
B = 100
G = A2
A2
A3
B
def BB(a,b,c):
BB1
def BBA():
bba1
bba2
bba3
C
D
def spam(x,y):
def eggs(z):
pass
'''
indentStack = [1]
stmt = Forward()
identifier = Word(alphas, alphanums)
funcDecl = ("def" + identifier + Group( "(" + Optional( delimitedList(identifier) ) + ")" ) + ":")
func_body = indentedBlock(stmt, indentStack)
funcDef = Group( funcDecl + func_body )
rvalue = Forward()
funcCall = Group(identifier + "(" + Optional(delimitedList(rvalue)) + ")")
rvalue << (funcCall | identifier | Word(nums))
assignment = Group(identifier + "=" + rvalue)
stmt << ( funcDef | assignment | identifier )
module_body = OneOrMore(stmt)
parseTree = module_body.parseString(data)
parseTree.pprint()
</pre>
<p>prints:</p>
<pre class="literalblock">
[['def',
'A',
['(', 'z', ')'],
':',
[['A1'], [['B', '=', '100']], [['G', '=', 'A2']], ['A2'], ['A3']]],
'B',
['def',
'BB',
['(', 'a', 'b', 'c', ')'],
':',
[['BB1'], [['def', 'BBA', ['(', ')'], ':', [['bba1'], ['bba2'], ['bba3']]]]]],
'C',
'D',
['def',
'spam',
['(', 'x', 'y', ')'],
':',
[[['def', 'eggs', ['(', 'z', ')'], ':', [['pass']]]]]]]
</pre>
<dl class="fields">
</dl>
</td></tr></table>
</div>
<br />
<!-- ==================== VARIABLES DETAILS ==================== -->
<a name="section-VariablesDetails"></a>
<table class="details" border="1" cellpadding="3"
cellspacing="0" width="100%" bgcolor="white">
<tr bgcolor="#70b0f0" class="table-header">
<td align="left" colspan="2" class="table-header">
<span class="table-header">Variables Details</span></td>
</tr>
</table>
<a name="alphanums"></a>
<div>
<table class="details" border="1" cellpadding="3"
cellspacing="0" width="100%" bgcolor="white">
<tr><td>
<h3 class="epydoc">alphanums</h3>
<dl class="fields">
</dl>
<dl class="fields">
<dt>Value:</dt>
<dd><table><tr><td><pre class="variable">
<code class="variable-quote">'</code><code class="variable-string">ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789</code><code class="variable-quote">'</code>
</pre></td></tr></table>
</dd>
</dl>
</td></tr></table>
</div>
<a name="printables"></a>
<div>
<table class="details" border="1" cellpadding="3"
cellspacing="0" width="100%" bgcolor="white">
<tr><td>
<h3 class="epydoc">printables</h3>
<dl class="fields">
</dl>
<dl class="fields">
<dt>Value:</dt>
<dd><table><tr><td><pre class="variable">
<code class="variable-quote">'</code><code class="variable-string">0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ!"#$%&\</code><span class="variable-linewrap"><img src="crarr.png" alt="\" /></span>
<code class="variable-string">'()*+,-./:;<=>?@[\\]^_`{|}~</code><code class="variable-quote">'</code>
</pre></td></tr></table>
</dd>
</dl>
</td></tr></table>
</div>
<a name="alphas8bit"></a>
<div>
<table class="details" border="1" cellpadding="3"
cellspacing="0" width="100%" bgcolor="white">
<tr><td>
<h3 class="epydoc">alphas8bit</h3>
<dl class="fields">
</dl>
<dl class="fields">
<dt>Value:</dt>
<dd><table><tr><td><pre class="variable">
<code class="variable-quote">u'</code><code class="variable-string">ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõöøùúûüýþÿ</code><code class="variable-quote">'</code>
</pre></td></tr></table>
</dd>
</dl>
</td></tr></table>
</div>
<a name="commaSeparatedList"></a>
<div>
<table class="details" border="1" cellpadding="3"
cellspacing="0" width="100%" bgcolor="white">
<tr><td>
<h3 class="epydoc">commaSeparatedList</h3>
<p>(Deprecated) Predefined expression of 1 or more printable words or
quoted strings, separated by commas. This expression is deprecated in
favor of <a
href="pyparsing.pyparsing_common-class.html#comma_separated_list"
class="link">pyparsing_common.comma_separated_list</a>.</p>
<dl class="fields">
</dl>
<dl class="fields">
<dt>Value:</dt>
<dd><table><tr><td><pre class="variable">
commaSeparatedList
</pre></td></tr></table>
</dd>
</dl>
</td></tr></table>
</div>
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