Serhiy Storchaka added the comment:
More general and simple solution is to make tempfile.NamedTemporaryFile
new-style class.
Old-style class:
>>> import tempfile
>>> f = tempfile.NamedTemporaryFile()
>>> len(f)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/home/serhiy/py/cpython-2.7/Lib/tempfile.py", line 391, in __getattr__
a = getattr(file, name)
AttributeError: 'file' object has no attribute '__len__'
New-style class:
>>> import tempfile
>>> f = tempfile.NamedTemporaryFile()
>>> len(f)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: object of type '_TemporaryFileWrapper' has no len()
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nosy: +serhiy.storchaka
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Python tracker <[email protected]>
<http://bugs.python.org/issue15267>
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