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What is the elegant way to check if object is list of lists of strings, without nested loops? Proba… Read more Check If Object Is List Of Lists Of Strings?

I wonder how to correctly use python 2.7 callback functions. I have some callback functions from Ch… Read more How To Use A Callback Function In Python?

I understand that you could be more efficient with memory in the implementation of map than in how … Read more Where Does The Performance Boost Of Map Or List Comprehension Implementations Over Calling A Function Over A Loop Come From?

This is my iterative solution: def exists(key, arg): if not arg: return False else:… Read more How To Find A Given Element In Nested Lists?

I'm trying to create what I think is a 'projection' from a larger dictionary space onto… Read more Python List Of Dictionaries Projection, Filter, Or Subset?

This is a question about scope and closures in Python, motivated by an exercise in SICP. Much thank… Read more Tracking Number Of Function Calls + Closures (à La Sicp) In Python