[issue23099] BytesIO and StringIO values unavailable when closed

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

getvalue() doesn't work after close() for purpose. close() frees memory used by BytesIO.

>>> import io, sys
>>> bio = io.BytesIO()
>>> sys.getsizeof(bio)
52
>>> bio.write(b'x'*1000)
1000
>>> sys.getsizeof(bio)
1053
>>> bio.close()
>>> sys.getsizeof(bio)
52

Changing the behavior will cause regression.

The behavior of memoryview looks as a bug.

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nosy: +serhiy.storchaka

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue23099>
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