http://code.activestate.com/recipes/users/4181975/2012-12-11T16:59:14-08:00ActiveState Code Recipes2012-12-11T16:59:14-08:00John Crichtonhttp://code.activestate.com/recipes/users/4181975/http://code.activestate.com/recipes/578376-an-analogue-of-enumerate-for-nested-lists/

<p style="color: grey"> Python recipe 578376 by <a href="/recipes/users/4181975/">John Crichton</a> (<a href="/recipes/tags/enumerate/">enumerate</a>, <a href="/recipes/tags/index/">index</a>, <a href="/recipes/tags/iterator/">iterator</a>, <a href="/recipes/tags/list/">list</a>). Revision 6. </p> <p>A generator function which enables traversal and modification of deeply nested lists. Together with the supplied helper functions it could be useful when working with data stored in deeply nested lists, particularly when the level of nesting precludes a recursive approach.</p>

2012-05-04T14:09:14-07:00John Crichtonhttp://code.activestate.com/recipes/users/4181975/http://code.activestate.com/recipes/578119-recursively-defined-haskell-style-infinite-lists/

<p style="color: grey"> Python recipe 578119 by <a href="/recipes/users/4181975/">John Crichton</a> (<a href="/recipes/tags/decorator/">decorator</a>, <a href="/recipes/tags/functional/">functional</a>, <a href="/recipes/tags/generator/">generator</a>, <a href="/recipes/tags/infinite/">infinite</a>, <a href="/recipes/tags/itertools/">itertools</a>, <a href="/recipes/tags/lazy/">lazy</a>, <a href="/recipes/tags/recursive/">recursive</a>). Revision 2. </p> <p>A decorator to simplify the creation of recursively defined, Haskell-style infinite lists -- ie. recursive generators -- inspired by Raymond Hettinger's "Technique for cyclical iteration" [*]. </p> <p>[*] <a href="http://code.activestate.com/recipes/576961-technique-for-cyclical-iteration/" rel="nofollow">http://code.activestate.com/recipes/576961-technique-for-cyclical-iteration/</a> </p>