New submission from Barney Gale <[email protected]>:
`pathlib.Path` objects can be used as context managers, but this functionality
is undocumented and makes little sense. Example:
>>> import pathlib
>>> root = pathlib.Path("/")
>>> with root:
... print(1)
...
1
>>> with root:
... print(2)
...
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/home/barney/.pyenv/versions/3.7.3/lib/python3.7/pathlib.py", line
1028, in __enter__
self._raise_closed()
File "/home/barney/.pyenv/versions/3.7.3/lib/python3.7/pathlib.py", line
1035, in _raise_closed
raise ValueError("I/O operation on closed path")
ValueError: I/O operation on closed path
`Path` objects don't acquire any resources on __new__/__init__/__enter__, nor
do they release any resources on __exit__. The whole notion of the path being
`_closed` seems to exist purely to make impure `Path` methods unusable after
exiting from the context manager. I can't personally think of a compelling use
case for this, and suggest that it be removed.
----------
components: Library (Lib)
messages: 362244
nosy: barneygale
priority: normal
severity: normal
status: open
title: pathlib.Path objects can be used as context managers
versions: Python 3.8
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Python tracker <[email protected]>
<https://bugs.python.org/issue39682>
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