Serhiy Storchaka added the comment:
This example is not correct.
1) Argument of BufferedReader should be binary stream.
>>> import io, gc
>>> f = open('/dev/null')
>>> bufio = io.BufferedReader(f)
>>> bufio.read(1)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
AttributeError: '_io.TextIOWrapper' object has no attribute 'readinto'
2) gc.collect() doesn't collect file streams because references to them are
saved in local variables.
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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue22078>
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