Popular recipes tagged "with_statement" but not "with"http://code.activestate.com/recipes/tags/with_statement-with/2013-12-16T21:43:27-08:00ActiveState Code RecipesUse PDFWriter with context manager support (Python)
2013-12-16T21:43:27-08:00Vasudev Ramhttp://code.activestate.com/recipes/users/4173351/http://code.activestate.com/recipes/578790-use-pdfwriter-with-context-manager-support/
<p style="color: grey">
Python
recipe 578790
by <a href="/recipes/users/4173351/">Vasudev Ram</a>
(<a href="/recipes/tags/contextmanager/">contextmanager</a>, <a href="/recipes/tags/context_manager/">context_manager</a>, <a href="/recipes/tags/pdf/">pdf</a>, <a href="/recipes/tags/python/">python</a>, <a href="/recipes/tags/reportlab/">reportlab</a>, <a href="/recipes/tags/with_statement/">with_statement</a>, <a href="/recipes/tags/xtopdf/">xtopdf</a>).
</p>
<p>PDFWriter - a core class of the xtopdf toolkit - can now be used with a Python context manager, a.k.a. the Python <strong>with</strong> statement.</p>
<p>Code example below. More details here:</p>
<p><a href="http://jugad2.blogspot.in/2013/12/xtopdf-pdfwriter-now-has-context.html" rel="nofollow">http://jugad2.blogspot.in/2013/12/xtopdf-pdfwriter-now-has-context.html</a></p>
Wrap any iterable context manager so it closes when consumed (Python)
2012-11-19T20:10:35-08:00Andrew Barnerthttp://code.activestate.com/recipes/users/4184316/http://code.activestate.com/recipes/578342-wrap-any-iterable-context-manager-so-it-closes-whe/
<p style="color: grey">
Python
recipe 578342
by <a href="/recipes/users/4184316/">Andrew Barnert</a>
(<a href="/recipes/tags/contextmanager/">contextmanager</a>, <a href="/recipes/tags/context_manager/">context_manager</a>, <a href="/recipes/tags/generator/">generator</a>, <a href="/recipes/tags/iterable/">iterable</a>, <a href="/recipes/tags/iterator/">iterator</a>, <a href="/recipes/tags/with_statement/">with_statement</a>).
</p>
<p>There are a few types in Python—most notably, files—that are both iterators and context managers. For trivial cases, these features are easy to use together, but as soon as you need to use the iterator lazily or asynchronously, a with statement won't help. That's where this recipe comes in handy:</p>
<pre class="prettyprint"><code>send_async(with_iter(open(path, 'r')))
</code></pre>
<p>This also allows you to "forward" closing for a wrapped iterator, so closing the outer iterator also closes the inner one:</p>
<pre class="prettyprint"><code>sync_async(line.upper() for line in with_iter(open(path, 'r')))
</code></pre>
Temporary substitution of object in modules via with statement (Python)
2010-01-24T04:19:12-08:00Jacob Oscarsonhttp://code.activestate.com/recipes/users/1355144/http://code.activestate.com/recipes/577020-temporary-substitution-of-object-in-modules-via-wi/
<p style="color: grey">
Python
recipe 577020
by <a href="/recipes/users/1355144/">Jacob Oscarson</a>
(<a href="/recipes/tags/modules/">modules</a>, <a href="/recipes/tags/testing/">testing</a>, <a href="/recipes/tags/with_statement/">with_statement</a>).
</p>
<p>See docstring in the code</p>
'with' statement for StringIO (Python)
2009-02-24T00:01:16-08:00sridhttp://code.activestate.com/recipes/users/4053089/http://code.activestate.com/recipes/576650-with-statement-for-stringio/
<p style="color: grey">
Python
recipe 576650
by <a href="/recipes/users/4053089/">srid</a>
(<a href="/recipes/tags/stringio/">stringio</a>, <a href="/recipes/tags/with_statement/">with_statement</a>).
Revision 3.
</p>
<p>NOTE: Consider this recipe obsolete. Instead use <code>contextlib.closing</code> (see comment below).</p>
<p>This contextmanager adds 'with' statement support for StringIO. Peruse the following simple example:</p>
<pre class="prettyprint"><code>with StringIO() as sio:
function_accepting_file_handle(sio)
print sio.getvalue()
</code></pre>