Serhiy Storchaka <storchaka+cpyt...@gmail.com> added the comment:
The entirely abstract example LGTM.
As for concrete real word examples, the possible one is changing the current
working directory:
cwd = os.getcwd()
try:
os.chdir(target_dir)
yield
finally:
os.chdir(cwd)
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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue33468>
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