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Transforming Code into Beautiful, Idiomatic Python
Next Day Video

Raymond Hettinger's PyCon 2013 talk on transforming code into idiomatic Python through a series of before-and-after refactorings. It shows how to use iterators, dictionaries, named tuples and other language features well.
HN treats it as a must-watch classic for writing Pythonic code, though somewhat dated for modern Python.
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