[issue1242657] list(obj) can swallow KeyboardInterrupt

[Raymond Hettinger]

Raymond Hettinger <rhettinger at users.sourceforge.net> added the comment:

Here's a patch that fixes-up length_hint and it's internal callers.

I think there are plenty of other places that also swallow exceptions
but will leave those for someone who wants to look at every instance of
PyErr_Clear() to see if it has been restricted to some small group of
exceptions.

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assignee: rhettinger -> 
keywords: +patch
versions: +Python 2.7, Python 3.0
Added file: http://bugs.python.org/file12749/lenhint.diff

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