Top-rated recipes tagged "join" Code RecipesClassifying characters using nested conditional expressions (Python) 2017-04-27T21:26:00-07:00Vasudev Ram <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>). </p> <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 Hettinger <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. </p> <p>Implemented an SQL style INNER JOIN for two lists of tuples to be joined on a common field.</p> PDF Joiner / Splitter using wxPython, PyMuPDF (fitz / MuPDF) (Python) 2016-03-15T19:07:35-07:00Harald Lieder <p style="color: grey"> Python recipe 580622 by <a href="/recipes/users/4191581/">Harald Lieder</a> (<a href="/recipes/tags/join/">join</a>, <a href="/recipes/tags/pdf/">pdf</a>, <a href="/recipes/tags/python/">python</a>, <a href="/recipes/tags/split/">split</a>). </p> <p>Full featured PDF joiner. Join several PDF files into one output PDF. Page ranges can be specified as well as page orientation for each output page range. Tables of contents are intelligently preserved for each page range (can also be switched off). Output PDF metadata editable.</p> Elegant (?) AoP for methods and functions (Python) 2010-03-02T20:10:38-08:00Alec Thomas <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. </p> <p>There are a couple of other AoP related recipes on ASPN. This one is designed to have a simple, elegant interface.</p>