http://code.activestate.com/recipes/tags/lambda-expressions/2014-07-02T20:54:01-07:00ActiveState Code Recipes2014-07-02T20:54:01-07:00David Weilhttp://code.activestate.com/recipes/users/1296670/http://code.activestate.com/recipes/578902-name-a-lambda/

<p style="color: grey"> Python recipe 578902 by <a href="/recipes/users/1296670/">David Weil</a> (<a href="/recipes/tags/func_name/">func_name</a>, <a href="/recipes/tags/introspection/">introspection</a>, <a href="/recipes/tags/lambda/">lambda</a>, <a href="/recipes/tags/name/">name</a>, <a href="/recipes/tags/naming/">naming</a>). </p> <p>A very simple recipe to allow you <em>easily</em> name lambda-objects (or other kind of objects, callable, for example, partial objects) you create, with little overhead and friendly syntax.</p>

2012-11-01T10:30:58-07:00Scott S-Allenhttp://code.activestate.com/recipes/users/4181178/http://code.activestate.com/recipes/578310-list-comparison-difference-and-more-using-set-froz/

<p style="color: grey"> Python recipe 578310 by <a href="/recipes/users/4181178/">Scott S-Allen</a> (<a href="/recipes/tags/compare/">compare</a>, <a href="/recipes/tags/contain/">contain</a>, <a href="/recipes/tags/difference/">difference</a>, <a href="/recipes/tags/lambda/">lambda</a>, <a href="/recipes/tags/list/">list</a>, <a href="/recipes/tags/remove/">remove</a>, <a href="/recipes/tags/set/">set</a>, <a href="/recipes/tags/union/">union</a>). </p> <p>Python has a powerful suite of tools for comparing lists by way of sets and frozensets. Here are a few examples and conveniences that many newcomers, even a few seasoned developers, are unaware.</p>

2011-11-18T03:02:13-08:00Alexander James Wallarhttp://code.activestate.com/recipes/users/4179768/http://code.activestate.com/recipes/577949-password-generator-short-code/

<p style="color: grey"> Python recipe 577949 by <a href="/recipes/users/4179768/">Alexander James Wallar</a> (<a href="/recipes/tags/alphabet/">alphabet</a>, <a href="/recipes/tags/generator/">generator</a>, <a href="/recipes/tags/lambda/">lambda</a>, <a href="/recipes/tags/password/">password</a>, <a href="/recipes/tags/passwords/">passwords</a>, <a href="/recipes/tags/password_generator/">password_generator</a>, <a href="/recipes/tags/python/">python</a>, <a href="/recipes/tags/secure/">secure</a>, <a href="/recipes/tags/security/">security</a>, <a href="/recipes/tags/short_code/">short_code</a>). Revision 2. </p> <p>This recipe generates a pseudo-random password of a prescribed length. It also lets you specify what characters are not permitted in the password or specify what characters are.</p>

2011-10-24T22:26:07-07:00yoav glaznerhttp://code.activestate.com/recipes/users/4178625/http://code.activestate.com/recipes/577920-blocks-for-python/

<p style="color: grey"> Python recipe 577920 by <a href="/recipes/users/4178625/">yoav glazner</a> (<a href="/recipes/tags/block/">block</a>, <a href="/recipes/tags/lambda/">lambda</a>, <a href="/recipes/tags/python/">python</a>, <a href="/recipes/tags/style/">style</a>). </p> <p>A simple <strong>block</strong> function that lets one send multi line blocks of code to a function it doesn't really act like a <em>normal</em> def/lambda but offers cool style</p>

2009-09-29T13:34:35-07:00pavelhttp://code.activestate.com/recipes/users/4171837/http://code.activestate.com/recipes/576917-functional-selection-sort/

<p style="color: grey"> Python recipe 576917 by <a href="/recipes/users/4171837/">pavel</a> (<a href="/recipes/tags/algorithm/">algorithm</a>, <a href="/recipes/tags/algorithms/">algorithms</a>, <a href="/recipes/tags/functional/">functional</a>, <a href="/recipes/tags/lambda/">lambda</a>, <a href="/recipes/tags/reduce/">reduce</a>, <a href="/recipes/tags/selection/">selection</a>, <a href="/recipes/tags/sort/">sort</a>, <a href="/recipes/tags/sorting/">sorting</a>). Revision 3. </p> <p>This is a variant of selection sort without using for-statements. Do you like it? :-)</p>

2009-07-03T22:03:28-07:00nxwhttp://code.activestate.com/recipes/users/4170980/http://code.activestate.com/recipes/576829-lambda-program/

<p style="color: grey"> Python recipe 576829 by <a href="/recipes/users/4170980/">nxw</a> (<a href="/recipes/tags/lambda/">lambda</a>). </p> <p>An attempt to write a whole program inside a python lambda.</p>

2009-02-27T06:20:33-08:00Kaushik Ghosehttp://code.activestate.com/recipes/users/4166965/http://code.activestate.com/recipes/576672-another-use-for-lambdas-and-function-references/

<p style="color: grey"> Python recipe 576672 by <a href="/recipes/users/4166965/">Kaushik Ghose</a> (<a href="/recipes/tags/function_reference/">function_reference</a>, <a href="/recipes/tags/lambda/">lambda</a>, <a href="/recipes/tags/loop/">loop</a>). </p> <p>I was writing code to do bootstrapping on a set of data. I wanted a test case where if I asked for one bootstrap I would be returned the original data. lambdas and function references saved me from inefficient code.</p>

2008-10-04T12:40:42-07:00Andreas Nilssonhttp://code.activestate.com/recipes/users/4167183/http://code.activestate.com/recipes/576526-compare-making-filter-fun-again/

<p style="color: grey"> Python recipe 576526 by <a href="/recipes/users/4167183/">Andreas Nilsson</a> (<a href="/recipes/tags/compare/">compare</a>, <a href="/recipes/tags/filter/">filter</a>, <a href="/recipes/tags/functional/">functional</a>, <a href="/recipes/tags/lambda/">lambda</a>). Revision 2. </p> <p>compare() takes a function parameter and returns a callable comparator when compared to a value. When called, the comparator returns result of comparing the result of calling the function and the value it was created with.</p> <p>Basic usage:</p> <pre class="prettyprint"><code>items = [1, 2, 3, 4, 5] def double(x): return x * 2 for i in filter(compare(double) &gt; 5, items): print i #Prints 3, 4 and 5 </code></pre>