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<a name="Module:Scientific.IO.FortranFormat"><h1>Module Scientific.IO.FortranFormat</h1></a>
<p>Fortran-compatible input/output</p>
<p>This module provides two classes that aid in reading and writing
Fortran-formatted text files.</p>
Examples:
<p> Input:</p>
<pre>
s = ' 59999'
format = FortranFormat('2I4')
line = FortranLine(s, format)
print line[0]
print line[1]
</pre>
<p> prints</p>
<pre>
5
9999
</pre>
<p> Output:</p>
<pre>
format = FortranFormat('2D15.5')
line = FortranLine([3.1415926, 2.71828], format)
print str(line)
</pre>
<p> prints</p>
<p> <tt>3.14159D+00 2.71828D+00</tt>
</p>
<hr width=70%>
<a name="Class:Scientific.IO.FortranFormat.FortranLine"><h2>Class FortranLine: Fortran-style record in formatted files</h2></a>
<p>FortranLine objects represent the content of one record of a
Fortran-style formatted file. Indexing yields the contents as
Python objects, whereas transformation to a string (using the
built-in function <tt>str</tt>) yields the text representation.</p>
<p>Constructor: FortranLine(<i>data</i>, <i>format</i>, <i>length</i>=<tt>80</tt>)</p>
<p><dl>
<dt><i>data</i></dt>
<dd><p>
either a sequence of Python objects, or a string
formatted according to Fortran rules</p></dd>
<dt><i>format</i></dt>
<dd><p>
either a Fortran-style format string, or a
FortranFormat object. A FortranFormat should
be used when the same format string is used repeatedly,
because then the rather slow parsing of the string
is performed only once.</p></dd>
<dt><i>length</i></dt>
<dd><p>
the length of the Fortran record. This is relevant
only when <i>data</i> is a string; this string is then
extended by spaces to have the indicated length.
The default value of 80 is almost always correct.</p></dd>
</dl>
</p>
<p>Restrictions:</p>
<p>1) Only A, D, E, F, G, I, and X formats are supported (plus string
constants for output).</p>
<p>2) No direct support for complex numbers; they must be split into
real and imaginary parts before output.</p>
<p>3) No overflow check. If an output field gets too large, it will
take more space, instead of being replaced by stars according
to Fortran conventions.
</p>
<hr width=70%>
<a name="Class:Scientific.IO.FortranFormat.FortranFormat"><h2>Class FortranFormat: Parsed fortran-style format string</h2></a>
<p>Constructor: FortranFormat(<i>format</i>), where <i>format</i> is a
format specification according to Fortran rules.
</p>
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