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() ---------- nosy: +serhiy.storchaka _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue15267> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com