Python Tips, Tricks, and Idioms
summary
A fast tour of concrete Python tips: use \N{...} for readable Unicode literals, copy lists with [:], and read files in fixed chunks with iter(f.read, '') instead of while loops; sort by multiple keys using stable sort via two-pass (secondary key first), and replace list insert(0)/pop(0) with deque for O(1) pop(0) to fix scalability. Covers enumerate/zip for lock‑step iteration, else on for-loops as “not found” after break, key functions and itemgetter, iterators/generators, defaultdict/Counter/OrderedDict, and a dict‑sparsify trick for internal resizing.
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chapters (7)
- 0:00Start
- 5:31Negative Slicing
- 10:52Basics
- 14:15Lockstep Iteration
- 17:56Reason Not To Use an Else in the Absence of a Break
- 19:01Complex Numbers
- 43:20Dictionary Is Missing Method
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