How are deques in Python implemented, and when are they worse than lists?

Question

I\'ve recently gotten into investigating how various data structures are implemented in Python in order to make my code more efficient. In investigating how lists and deques

Answer 1

In addition to all the other helpful answers, here is some more information comparing the time complexity (Big-Oh) of various operations on Python lists, deques, sets, and dictionaries. This should help in selecting the right data structure for a particular problem.