[issue5137] SystemError when __len__ returns a non-number

[Raymond Hettinger]

New submission from Raymond Hettinger <rhettinger at users.sourceforge.net>:

len(obj) is not happy when obj.__len__() returns a non-number.

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files: crasher_len.py
messages: 81024
nosy: rhettinger
priority: release blocker
severity: normal
status: open
title: SystemError when __len__ returns a non-number
type: crash
versions: Python 3.0, Python 3.1
Added file: http://bugs.python.org/file12927/crasher_len.py

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