bpo-33234 Improve list() pre-sizing for inputs with known lengths (no __length_hint__) #9846

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pablogsal:bpo33234-2

Oct 28, 2018

Commits on Apr 17, 2018

Improve list() pre-sizing for inputs with known lengths
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Commits on Oct 13, 2018

Preallocate only when __len__ is available to avoid loss of performance for small iterables
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Commits on Oct 15, 2018

Fix NEWS entry and correct style
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Commits on Oct 23, 2018

Use _PyObject_HasLen to check if the object has lenght to avoid overhead
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Simplify implementation and don't capture all expections on error
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Commits on Oct 25, 2018

Add assert and fix formatting
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Remove uneeded test modification
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Commits on Oct 26, 2018

Don't preallocate if list is modified when calling PyObject_Size
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Improve readability in the error handling branch
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Commits on Oct 28, 2018

Capture only TypeError as suggested by Serhiy
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