[issue1647489] zero-length match confuses re.finditer()

[Martin Morrison]

Martin Morrison added the comment:

This is still an issue today:

>>> import re
>>> [m.groups() for m in re.finditer(r'(^z*)|(\w+)', 'abc')]
[('', None), (None, 'bc')]

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nosy: +isoschiz

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue1647489>
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