http://code.activestate.com/recipes/tags/index-python/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>

2009-01-21T15:37:13-08:00David Lamberthttp://code.activestate.com/recipes/users/4167420/http://code.activestate.com/recipes/576625-poor-mans-mgrid/

<p style="color: grey"> Python recipe 576625 by <a href="/recipes/users/4167420/">David Lambert</a> (<a href="/recipes/tags/index/">index</a>, <a href="/recipes/tags/index_tricks/">index_tricks</a>, <a href="/recipes/tags/method/">method</a>, <a href="/recipes/tags/mgrid/">mgrid</a>, <a href="/recipes/tags/numerical/">numerical</a>, <a href="/recipes/tags/numerical_methods/">numerical_methods</a>, <a href="/recipes/tags/numpy/">numpy</a>, <a href="/recipes/tags/scipy/">scipy</a>, <a href="/recipes/tags/trick/">trick</a>). </p> <p>Python 3 code. scipy.mgrid is a useful! This short implementation comes without installing numpy.</p>

2008-08-16T19:41:37-07:00nosklohttp://code.activestate.com/recipes/users/4166478/http://code.activestate.com/recipes/576426-get-index-of-element-in-list-using-identity/

<p style="color: grey"> Python recipe 576426 by <a href="/recipes/users/4166478/">nosklo</a> (<a href="/recipes/tags/compare/">compare</a>, <a href="/recipes/tags/comparision/">comparision</a>, <a href="/recipes/tags/find/">find</a>, <a href="/recipes/tags/identity/">identity</a>, <a href="/recipes/tags/index/">index</a>, <a href="/recipes/tags/is/">is</a>, <a href="/recipes/tags/same_object/">same_object</a>, <a href="/recipes/tags/search/">search</a>). Revision 2. </p> <p>my_list.index(element) returns the index of the element using common comparision (as in == or __eq__() or __cmp__()). If you need to find an element on the list using identity comparing (is) then this function can do it for you</p>