sources for io.html [rev. unknown]
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<div class="document" id="py-io">
<h1 class="title">py.io</h1>
<div class="contents topic">
<p class="topic-title first"><a id="contents" name="contents">Contents</a></p>
<ul class="auto-toc simple">
<li><a class="reference" href="#io-capturing-examples" id="id1" name="id1">1&nbsp;&nbsp;&nbsp;IO Capturing examples</a><ul class="auto-toc">
<li><a class="reference" href="#py-io-stdcapture" id="id2" name="id2">1.1&nbsp;&nbsp;&nbsp;py.io.StdCapture</a></li>
<li><a class="reference" href="#py-io-stdcapturefd" id="id3" name="id3">1.2&nbsp;&nbsp;&nbsp;py.io.StdCaptureFD</a></li>
</ul>
</li>
</ul>
</div>
<p>The 'py' lib provides helper classes for capturing IO during
execution of a program.</p>
<div class="section">
<h1><a class="toc-backref" href="#id1" id="io-capturing-examples" name="io-capturing-examples">1&nbsp;&nbsp;&nbsp;IO Capturing examples</a></h1>
<div class="section">
<h2><a id="py-io-stdcapture" name="py-io-stdcapture">1.1&nbsp;&nbsp;&nbsp;<a class="reference" href="../../apigen/api/io.StdCapture.html">py.io.StdCapture</a></a></h2>
<p>Basic Example:</p>
<blockquote>
<pre class="doctest-block">
&gt;&gt;&gt; import py
&gt;&gt;&gt; capture = py.io.StdCapture()
&gt;&gt;&gt; print &quot;hello&quot;
&gt;&gt;&gt; out,err = capture.reset()
&gt;&gt;&gt; out.strip() == &quot;hello&quot;
True
</pre>
</blockquote>
<p>For calling functions you may use a shortcut:</p>
<blockquote>
<pre class="doctest-block">
&gt;&gt;&gt; import py
&gt;&gt;&gt; def f(): print &quot;hello&quot;
&gt;&gt;&gt; res, out, err = py.io.StdCapture.call(f)
&gt;&gt;&gt; out.strip() == &quot;hello&quot;
True
</pre>
</blockquote>
</div>
<div class="section">
<h2><a id="py-io-stdcapturefd" name="py-io-stdcapturefd">1.2&nbsp;&nbsp;&nbsp;<a class="reference" href="../../apigen/api/io.StdCaptureFD.html">py.io.StdCaptureFD</a></a></h2>
<p>If you also want to capture writes to the stdout/stderr
filedescriptors you may invoke:</p>
<blockquote>
<pre class="doctest-block">
&gt;&gt;&gt; import py, sys
&gt;&gt;&gt; capture = py.io.StdCaptureFD()
&gt;&gt;&gt; sys.stderr.write(&quot;world&quot;)
&gt;&gt;&gt; out,err = capture.reset()
&gt;&gt;&gt; err
'world'
</pre>
</blockquote>
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