New submission from Serhiy Storchaka <[email protected]>:
Some modules have caches. There is a need to clear all tests before running
tests. Brett proposed to add in all modules with caches a function with the
standardized name which is responsible for clearing module related caches. [1]
The proposed PR adds a new function clear_caches() in the sys module. It
iterates all imported modules and calls function __clearcache__() if it is
defined.
def clear_caches():
for mod in reversed(list(sys.modules.values())):
if hasattr(mod, '__clearcache__'):
mod.__clearcache__()
clear_caches() will be used in test.regrtest and can be used in user code. The
PR defines also function __clearcache__ for modules which are cleared manually
in the current code.
This is a preliminary implementation, bikeshedding is welcome.
[1] https://mail.python.org/pipermail/python-ideas/2019-March/056165.html
----------
components: Library (Lib), Tests
messages: 339190
nosy: brett.cannon, ezio.melotti, michael.foord, serhiy.storchaka
priority: normal
severity: normal
status: open
title: Add a way to clear all caches
type: enhancement
versions: Python 3.8
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Python tracker <[email protected]>
<https://bugs.python.org/issue36485>
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