[New-bugs-announce] [issue15621] UnboundLocalError on simple in-place assignment of an inner scope

[zipher]

New submission from zipher:

>>> num = 1
>>> def t1():
      print num
>>> t1()
1
>>> def t2():
...   num+=1
...   print num
>>> t2()
UnboundLocalError: local variable 'num' referenced before assignment

It seems num is bound in t1, but not t2, even though they are the same scope.  Am I missing something?

----------
components: Interpreter Core
messages: 167928
nosy: Mark.Janssen
priority: normal
severity: normal
status: open
title: UnboundLocalError on simple in-place assignment of an inner scope
versions: Python 2.7

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue15621>
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