Issue Tracker issues, and a bug in Python

[Hosford, Aaron Michael]

Hi all,

I found a bug in Python 2.7 involving dictionary comprehensions. I repeatedly tried to register on the Issue Tracker (http://bugs.python.org/) but never received a confirmation email, so I still can't log in and post it there. Maybe someone on this list can post it on my behalf:

>>> functions =  {x : lambda y: x + y for x in xrange(10)}
>>> functions[0](0)
9
>>>

The expression "functions[0](0)" should return 0, not 9. It looks like the scope for variable x is shared across the entire dictionary comprehension rather than having separate scope for each generated item.



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