Popular recipes tagged "join" but not "python"http://code.activestate.com/recipes/tags/join-python/2017-04-27T21:26:00-07:00ActiveState Code RecipesClassifying characters using nested conditional expressions (Python)
2017-04-27T21:26:00-07:00Vasudev Ramhttp://code.activestate.com/recipes/users/4173351/http://code.activestate.com/recipes/580792-classifying-characters-using-nested-conditional-ex/
<p style="color: grey">
Python
recipe 580792
by <a href="/recipes/users/4173351/">Vasudev Ram</a>
(<a href="/recipes/tags/characters/">characters</a>, <a href="/recipes/tags/classification/">classification</a>, <a href="/recipes/tags/conditional_expressions/">conditional_expressions</a>, <a href="/recipes/tags/expressions/">expressions</a>, <a href="/recipes/tags/join/">join</a>, <a href="/recipes/tags/lambda/">lambda</a>, <a href="/recipes/tags/map/">map</a>).
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<p>Python has a feature called conditional expressions, similar to C's ternary operator. For example:</p>
<p>print n, 'is odd' if n % 2 == 1 else 'is even'</p>
<p>Here, the conditional expression is this part of the print statement above:</p>
<p>'is odd' if n % 2 == 1 else 'is even'</p>
<p>This expression evaluates to 'is odd' if the condition after the if keyword is True, and evaluates to 'is even' otherwise.</p>
<p>The Python Language Reference section for conditional expressions shows that they can be nested. This recipe shows that we can use nested conditional expressions (within a return statement in a user-defined function) to classify characters into lowercase letters, uppercase letters, or neither.</p>
<p>It also shows how to do the same task using map, lambda and string.join, again with a nested conditional expression, but without using return or a user-defined function.</p>
Inner Join (Python)
2011-11-01T20:10:34-07:00Raymond Hettingerhttp://code.activestate.com/recipes/users/178123/http://code.activestate.com/recipes/577937-inner-join/
<p style="color: grey">
Python
recipe 577937
by <a href="/recipes/users/178123/">Raymond Hettinger</a>
(<a href="/recipes/tags/database/">database</a>, <a href="/recipes/tags/join/">join</a>, <a href="/recipes/tags/sql/">sql</a>).
Revision 2.
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<p>Implemented an SQL style INNER JOIN for two lists of tuples to be joined on a common field.</p>
Elegant (?) AoP for methods and functions (Python)
2010-03-02T20:10:38-08:00Alec Thomashttp://code.activestate.com/recipes/users/2870300/http://code.activestate.com/recipes/577082-elegant-aop-for-methods-and-functions/
<p style="color: grey">
Python
recipe 577082
by <a href="/recipes/users/2870300/">Alec Thomas</a>
(<a href="/recipes/tags/aop/">aop</a>, <a href="/recipes/tags/aspect/">aspect</a>, <a href="/recipes/tags/join/">join</a>, <a href="/recipes/tags/oriented/">oriented</a>, <a href="/recipes/tags/point/">point</a>).
Revision 2.
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<p>There are a couple of other AoP related recipes on ASPN. This one is designed to have a simple, elegant interface.</p>