[New-bugs-announce] [issue10189] SyntaxError: no binding for nonlocal doesn't contain a useful traceback

[Alex]

New submission from Alex <alex.gaynor at gmail.com>:

Given the code:

def f():
    def g():
        nonlocal a
        a = 3

Running it produces:

alex at alex-laptop:/tmp$ python3.1 test.py 
SyntaxError: no binding for nonlocal 'a' found

Compared to a different SyntaxError:

alex at alex-laptop:/tmp$ python3.1 test.py 
  File "test.py", line 1
    print a
          ^
SyntaxError: invalid syntax

----------
components: Interpreter Core
messages: 119527
nosy: alex
priority: normal
severity: normal
status: open
title: SyntaxError: no binding for nonlocal doesn't contain a useful traceback
versions: Python 3.1

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue10189>
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