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<div class="section" lang="en">
<div class="titlepage">
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<div>
<h2 class="title"><a name="soap.install"></a>12.2. Installing the SOAP Libraries
</h2>
</div>
</div>
<div></div>
</div>
<div class="toc">
<ul>
<li><span class="section"><a href="install.html#d0e29967">12.2.1. Installing PyXML</a></span></li>
<li><span class="section"><a href="install.html#d0e30070">12.2.2. Installing fpconst</a></span></li>
<li><span class="section"><a href="install.html#d0e30171">12.2.3. Installing SOAPpy</a></span></li>
</ul>
</div>
<div class="abstract">
<p>Unlike the other code in this book, this chapter relies on libraries that do not come pre-installed with <span class="application">Python</span>.
</p>
</div>
<p>Before you can dive into <span class="acronym">SOAP</span> web services, you'll need to install three libraries: <span class="application">PyXML</span>, <span class="application">fpconst</span>, and <span class="application">SOAPpy</span>.
</p>
<div class="section" lang="en">
<div class="titlepage">
<div>
<div>
<h3 class="title"><a name="d0e29967"></a>12.2.1. Installing <span class="application">PyXML</span></h3>
</div>
</div>
<div></div>
</div>
<p>The first library you need is <span class="application">PyXML</span>, an advanced set of <span class="acronym">XML</span> libraries that provide more functionality than the built-in <span class="acronym">XML</span> libraries we studied in <a href="../xml_processing/index.html">Chapter 9</a>.
</p>
<div class="procedure">
<h3 class="title">Procedure 12.1. </h3>
<p>Here is the procedure for installing <span class="application">PyXML</span>:
</p>
<ol type="1">
<li>
<p>Go to <a href="http://pyxml.sourceforge.net/">http://pyxml.sourceforge.net/</a>, click Downloads, and download the latest version for your operating system.
</p>
</li>
<li>
<p>If you are using Windows, there are several choices. Make sure to download the version of <span class="application">PyXML</span> that matches the version of <span class="application">Python</span> you are using.
</p>
</li>
<li>
<p>Double-click the installer. If you download <span class="application">PyXML</span> 0.8.3 for Windows and <span class="application">Python</span> 2.3, the installer program will be <tt class="filename">PyXML-0.8.3.win32-py2.3.exe</tt>.
</p>
</li>
<li>
<p>Step through the installer program.</p>
</li>
<li>
<p>After the installation is complete, close the installer. There will not be any visible indication of success (no programs
installed on the Start Menu or shortcuts installed on the desktop). <span class="application">PyXML</span> is simply a collection of <span class="acronym">XML</span> libraries used by other programs.
</p>
</li>
</ol>
</div>
<p>To verify that you installed <span class="application">PyXML</span> correctly, run your <span class="application">Python</span> <span class="acronym">IDE</span> and check the version of the <span class="acronym">XML</span> libraries you have installed, as shown here.
</p>
<div class="example"><a name="d0e30044"></a><h3 class="title">Example 12.3. Verifying <span class="application">PyXML</span> Installation
</h3><pre class="screen">
<tt class="prompt">>>> </tt><span class="userinput"><span class='pykeyword'>import</span> xml</span>
<tt class="prompt">>>> </tt><span class="userinput">xml.__version__</span>
<span class="computeroutput">'0.8.3'</span>
</pre><p>This version number should match the version number of the <span class="application">PyXML</span> installer program you downloaded and ran.
</p>
</div>
</div>
<div class="section" lang="en">
<div class="titlepage">
<div>
<div>
<h3 class="title"><a name="d0e30070"></a>12.2.2. Installing <span class="application">fpconst</span></h3>
</div>
</div>
<div></div>
</div>
<p>The second library you need is <span class="application">fpconst</span>, a set of constants and functions for working with IEEE754 double-precision special values. This provides support for the
special values Not-a-Number (NaN), Positive Infinity (Inf), and Negative Infinity (-Inf), which are part of the <span class="acronym">SOAP</span> datatype specification.
</p>
<div class="procedure">
<h3 class="title">Procedure 12.2. </h3>
<p>Here is the procedure for installing <span class="application">fpconst</span>:
</p>
<ol type="1">
<li>
<p>Download the latest version of <span class="application">fpconst</span> from <a href="http://www.analytics.washington.edu/statcomp/projects/rzope/fpconst/">http://www.analytics.washington.edu/statcomp/projects/rzope/fpconst/</a>.
</p>
</li>
<li>
<p>There are two downloads available, one in <tt class="filename">.tar.gz</tt> format, the other in <tt class="filename">.zip</tt> format. If you are using Windows, download the <tt class="filename">.zip</tt> file; otherwise, download the <tt class="filename">.tar.gz</tt> file.
</p>
</li>
<li>
<p>Decompress the downloaded file. On Windows XP, you can right-click on the file and choose Extract All; on earlier versions
of Windows, you will need a third-party program such as WinZip. On <span class="abbrev">Mac</span> <span class="acronym">OS</span> X, you can double-click the compressed file to decompress it with Stuffit Expander.
</p>
</li>
<li>
<p>Open a command prompt and navigate to the directory where you decompressed the <span class="application">fpconst</span> files.
</p>
</li>
<li>
<p>Type <b class="userinput"><tt>python setup.py install</tt></b> to run the installation program.
</p>
</li>
</ol>
</div>
<p>To verify that you installed <span class="application">fpconst</span> correctly, run your <span class="application">Python</span> <span class="acronym">IDE</span> and check the version number.
</p>
<div class="example"><a name="d0e30145"></a><h3 class="title">Example 12.4. Verifying <span class="application">fpconst</span> Installation
</h3><pre class="screen">
<tt class="prompt">>>> </tt><span class="userinput"><span class='pykeyword'>import</span> fpconst</span>
<tt class="prompt">>>> </tt><span class="userinput">fpconst.__version__</span>
<span class="computeroutput">'0.6.0'</span>
</pre><p>This version number should match the version number of the <span class="application">fpconst</span> archive you downloaded and installed.
</p>
</div>
</div>
<div class="section" lang="en">
<div class="titlepage">
<div>
<div>
<h3 class="title"><a name="d0e30171"></a>12.2.3. Installing <span class="application">SOAPpy</span></h3>
</div>
</div>
<div></div>
</div>
<p>The third and final requirement is the <span class="acronym">SOAP</span> library itself: <span class="application">SOAPpy</span>.
</p>
<div class="procedure">
<h3 class="title">Procedure 12.3. </h3>
<p>Here is the procedure for installing <span class="application">SOAPpy</span>:
</p>
<ol type="1">
<li>
<p>Go to <a href="http://pywebsvcs.sourceforge.net/">http://pywebsvcs.sourceforge.net/</a> and select Latest Official Release under the <span class="application">SOAPpy</span> section.
</p>
</li>
<li>
<p>There are two downloads available. If you are using Windows, download the <tt class="filename">.zip</tt> file; otherwise, download the <tt class="filename">.tar.gz</tt> file.
</p>
</li>
<li>
<p>Decompress the downloaded file, just as you did with <span class="application">fpconst</span>.
</p>
</li>
<li>
<p>Open a command prompt and navigate to the directory where you decompressed the <span class="application">SOAPpy</span> files.
</p>
</li>
<li>
<p>Type <b class="userinput"><tt>python setup.py install</tt></b> to run the installation program.
</p>
</li>
</ol>
</div>
<p>To verify that you installed <span class="application">SOAPpy</span> correctly, run your <span class="application">Python</span> <span class="acronym">IDE</span> and check the version number.
</p>
<div class="example"><a name="d0e30237"></a><h3 class="title">Example 12.5. Verifying <span class="application">SOAPpy</span> Installation
</h3><pre class="screen">
<tt class="prompt">>>> </tt><span class="userinput"><span class='pykeyword'>import</span> SOAPpy</span>
<tt class="prompt">>>> </tt><span class="userinput">SOAPpy.__version__</span>
<span class="computeroutput">'0.11.4'</span>
</pre><p>This version number should match the version number of the <span class="application">SOAPpy</span> archive you downloaded and installed.
</p>
</div>
</div>
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