[issue23113] Compiler doesn't recognize qualified exec('', {})
New submission from John Firestone:
Python 2.7.8 (v2.7.8:ee879c0ffa11, Jun 29 2014, 21:07:35)
[GCC 4.2.1 (Apple Inc. build 5666) (dot 3)] on darwin
Type help, copyright, credits or license for more information.
def outer():
... def inner(arg):
... len(arg)
... exec('', {})
...
File stdin, line 4
SyntaxError: unqualified exec is not allowed in function 'outer' it contains a
nested function with free variables
def outer():
... def inner(arg):
... len(arg)
... exec '' in {}
...
--
components: Interpreter Core
files: bug.py
messages: 233096
nosy: johnf
priority: normal
severity: normal
status: open
title: Compiler doesn't recognize qualified exec('', {})
type: behavior
versions: Python 2.7
Added file: http://bugs.python.org/file37541/bug.py
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[issue23113] Compiler doesn't recognize qualified exec('', {})
John Firestone added the comment: Sorry. Duplicates 21591 -- status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue23113 ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue15099] exec of function doesn't call __getitem__ or __missing__ on undefined global
New submission from John Firestone jo...@freenet.de: exec(source, Dict()) doesn't call Dict().__getitem__ or Dict().__missing__ if the source string contains a function and the function references an undefined global. class Dict1(dict): def __getitem__(self, key): print '__getitem__', repr(key) if key == 's': return None return dict.__getitem__(self, key) class Dict2(dict): def __missing__(self, key): print '__missing__', repr(key) return None source = if 1: print ' 1' s def f(): print ' 2' s print ' 3' f() print 'Dict1.__getitem__' try: exec(source, Dict1()) except NameError as exc_value: print ' %s: %s' % (exc_value.__class__.__name__, exc_value) print 'Dict2.__missing__' try: exec(source, Dict2()) except NameError as exc_value: print '%s: %s' % (exc_value.__class__.__name__, exc_value) Python 2.7.3 (v2.7.3:70274d53c1dd, Apr 9 2012, 20:32:06) [GCC 4.0.1 (Apple Inc. build 5493)] on darwin import curiosity Dict1.__getitem__ 1 __getitem__ 's' __getitem__ 'f' 2 NameError: global name 's' is not defined Dict2.__missing__ 1 __missing__ 's' 2 NameError: global name 's' is not defined -- components: Interpreter Core files: curiosity.py messages: 163095 nosy: johnf priority: normal severity: normal status: open title: exec of function doesn't call __getitem__ or __missing__ on undefined global type: behavior versions: Python 2.7 Added file: http://bugs.python.org/file26041/curiosity.py ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue15099 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue15099] exec of function doesn't call __getitem__ or __missing__ on undefined global
John Firestone jo...@freenet.de added the comment: I find the behavior inconsistent. As you can see from this example, the exec'uted code *does* call the instance's overloaded __getitem__ and __missing__ methods when outside a function, but doesn't when inside. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue15099 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue15099] exec of function doesn't call __getitem__ or __missing__ on undefined global
John Firestone jo...@freenet.de added the comment: Thank you all for the quick and interesting responses! Here is another example, this time showing a simple s sometimes behaves like globals()['s'] and sometimes doesn't. class Dict(dict): def __getitem__(self, key): if key == 's': return 'got s' return dict.__getitem__(self, key) dct = Dict() dct['the_dict'] = dct print 0, id(dct) source = if 1: print '1', id(globals()), globals() is the_dict print ' ', globals()['s'] print ' ', s def f(): print '2', id(globals()), globals() is the_dict print ' ', globals()['s'] print ' ', s print '3' f() exec(source, dct) Python 2.7.3 (v2.7.3:70274d53c1dd, Apr 9 2012, 20:32:06) [GCC 4.0.1 (Apple Inc. build 5493)] on darwin import curiosity2 0 2459928 1 2459928 True got s got s 2 2459928 True got s Traceback (most recent call last): File stdin, line 1, in module File curiosity2.py, line 22, in module exec(source, dct) File string, line 10, in module File string, line 8, in f NameError: global name 's' is not defined -- Added file: http://bugs.python.org/file26044/curiosity2.py ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue15099 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue3454] __getitem__() doesn't capture all slices if class inherits from list, tuple or str
Changes by John Firestone [EMAIL PROTECTED]: -- components: Interpreter Core files: getitem_problem.py nosy: johnf severity: normal status: open title: __getitem__() doesn't capture all slices if class inherits from list, tuple or str type: performance versions: Python 2.5 Added file: http://bugs.python.org/file10992/getitem_problem.py ___ Python tracker [EMAIL PROTECTED] http://bugs.python.org/issue3454 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
