[New-bugs-announce] [issue31336] Speed up _PyType_Lookup() for class creation
report at bugs.python.org
Mon Sep 4 07:39:18 EDT 2017
New submission from Stefan Behnel:
The method lookup fast path in _PyType_Lookup() does not apply during type creation, which is highly dominated by the performance of the dict lookups along the mro chain. Pre-calculating the name hash speeds up the creation of an empty class (i.e. "class Test: pass") by around 20%.
Will send a pull request shortly.
components: Interpreter Core
title: Speed up _PyType_Lookup() for class creation
versions: Python 3.7
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