Popular recipes tagged "tuple" but not "dictionaries"http://code.activestate.com/recipes/tags/tuple-dictionaries/2012-04-03T17:13:35-07:00ActiveState Code RecipesFlattening an arbitrarily deep list (or any iterator) (Python)
2012-04-03T17:13:35-07:00Garretthttp://code.activestate.com/recipes/users/4181290/http://code.activestate.com/recipes/578092-flattening-an-arbitrarily-deep-list-or-any-iterato/
<p style="color: grey">
Python
recipe 578092
by <a href="/recipes/users/4181290/">Garrett</a>
(<a href="/recipes/tags/flatten/">flatten</a>, <a href="/recipes/tags/iterator/">iterator</a>, <a href="/recipes/tags/itertools/">itertools</a>, <a href="/recipes/tags/list/">list</a>, <a href="/recipes/tags/python/">python</a>, <a href="/recipes/tags/tuple/">tuple</a>).
Revision 6.
</p>
<p>What if you had a list like this: [1, -10, [1,2,[3,4]], xrange(200)], and you just wanted to go through each element in order (wanted it to return a simple list of [1,-10,1,2,3,4,1,2,3,4...199])</p>
<p>I've seen a couple of attempts to flatten arbitrarily deep lists. Many of them involve recursion, like this one: <a href="http://rightfootin.blogspot.com/2006/09/more-on-python-flatten.html" rel="nofollow">http://rightfootin.blogspot.com/2006/09/more-on-python-flatten.html</a></p>
<p>Recursion is generally considered non-pythonic (at least to my knowledge), so I have used one which just involves simple iterators instead. Also, recursion will fail if the list is too deep (so it wouldn't really be arbitrary, would it?).</p>
Flatten Array/Tuple (Python)
2011-10-31T10:53:39-07:00Luca Zarottihttp://code.activestate.com/recipes/users/4179728/http://code.activestate.com/recipes/577932-flatten-arraytuple/
<p style="color: grey">
Python
recipe 577932
by <a href="/recipes/users/4179728/">Luca Zarotti</a>
(<a href="/recipes/tags/array/">array</a>, <a href="/recipes/tags/flatten/">flatten</a>, <a href="/recipes/tags/tuple/">tuple</a>).
</p>
<p>Flatten a nested array/tuple</p>
Fast flatten() with depth control and oversight over which subtrees to expand (Python)
2010-11-26T11:10:01-08:00Kevin L. Sitzehttp://code.activestate.com/recipes/users/4173535/http://code.activestate.com/recipes/577470-fast-flatten-with-depth-control-and-oversight-over/
<p style="color: grey">
Python
recipe 577470
by <a href="/recipes/users/4173535/">Kevin L. Sitze</a>
(<a href="/recipes/tags/flatten/">flatten</a>, <a href="/recipes/tags/iterator/">iterator</a>, <a href="/recipes/tags/iterators/">iterators</a>, <a href="/recipes/tags/list/">list</a>, <a href="/recipes/tags/optimal_solution/">optimal_solution</a>, <a href="/recipes/tags/python/">python</a>, <a href="/recipes/tags/sequence/">sequence</a>, <a href="/recipes/tags/tuple/">tuple</a>).
</p>
<p>Extremely fast, non-recursive, depth limited flatten with powerful control over which subtrees are to be expanded. If this is what you need then look no further.</p>
Clean preceeding and trailing whitespace in complex list dictionary tuple structures (Python)
2008-08-06T15:16:54-07:00Willhttp://code.activestate.com/recipes/users/4166209/http://code.activestate.com/recipes/576409-clean-preceeding-and-trailing-whitespace-in-comple/
<p style="color: grey">
Python
recipe 576409
by <a href="/recipes/users/4166209/">Will</a>
(<a href="/recipes/tags/dictionary/">dictionary</a>, <a href="/recipes/tags/list/">list</a>, <a href="/recipes/tags/tuple/">tuple</a>, <a href="/recipes/tags/whitespace/">whitespace</a>).
Revision 2.
</p>
<p>Function to clean trailing and or preceeding whitespace from string types in complex list, dictionary, and tuple structures. This is a recursive function to allow for complete coverage of all items in the structure. Wanted to share it as I needed it and after searching for a while I gave up and wrote one.</p>
<p>For example
a = ["\rText \r\n", "This one is fine", ["stuff ", [" Something Else"], 4, "Another ", "one", " with"], "\twhitespace\r\n"]</p>
<p>print cleanWhiteSpace(a)
Result:
["Text", "This one is fine", ["stuff", ["Something Else"], 4, "Another", "one", "with"], "whitespace"]</p>