[issue2378] UnboundLocalError when trying to raise exceptions inside execfile
Changes by Amaury Forgeot d'Arc [EMAIL PROTECTED]: Added file: http://bugs.python.org/file10953/localstofast.patch ___ Python tracker [EMAIL PROTECTED] http://bugs.python.org/issue2378 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue2378] UnboundLocalError when trying to raise exceptions inside execfile
Changes by Amaury Forgeot d'Arc [EMAIL PROTECTED]: Removed file: http://bugs.python.org/file10707/localstofast.patch ___ Python tracker [EMAIL PROTECTED] http://bugs.python.org/issue2378 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue2378] UnboundLocalError when trying to raise exceptions inside execfile
Changes by Amaury Forgeot d'Arc [EMAIL PROTECTED]: -- assignee: - amaury.forgeotdarc ___ Python tracker [EMAIL PROTECTED] http://bugs.python.org/issue2378 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue2378] UnboundLocalError when trying to raise exceptions inside execfile
Amaury Forgeot d'Arc [EMAIL PROTECTED] added the comment: Committed as r65177. -- resolution: - fixed status: open - closed ___ Python tracker [EMAIL PROTECTED] http://bugs.python.org/issue2378 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue2378] UnboundLocalError when trying to raise exceptions inside execfile
Amaury Forgeot d'Arc [EMAIL PROTECTED] added the comment: The problem seems to have been introduced by r53954. -- nosy: +amaury.forgeotdarc ___ Python tracker [EMAIL PROTECTED] http://bugs.python.org/issue2378 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue2378] UnboundLocalError when trying to raise exceptions inside execfile
Amaury Forgeot d'Arc [EMAIL PROTECTED] added the comment: The problem is in PyFrame_LocalsToFast. (As I understand it: Locals refers to the locals() dictionary of the frame; Fast refers to an optimization where local variables are stored in an array. Each call to locals() or the trace function normalizes data by copying the Fast array into the Locals dictionary; with sys.settrace, the user may modify the locals, so the inverse transformation is done after each call to the trace function) When defining a class, PyFrame_FastToLocals does not copy the free variables from enclosing scopes. This is the goal of r53954 Do not copy free variables to locals in class namespaces. When executing code in the class body, the sys.settrace function is called with this reduced set of locals(). The problem is that PyFrame_LocalsToFastdoes does not have the same test, and uses the locals() to update (and clear) the free variables as well. I attach a patch that makes PyFrame_LocalsToFast symmetric to PyFrame_FastToLocals: in the case of a class statement, do not update the free variables. -- keywords: +patch nosy: +jhylton Added file: http://bugs.python.org/file10707/localstofast.patch ___ Python tracker [EMAIL PROTECTED] http://bugs.python.org/issue2378 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue2378] UnboundLocalError when trying to raise exceptions inside execfile
alejandro david weil [EMAIL PROTECTED] added the comment: Shorter trigger code.. -- nosy: +tenuki Added file: http://bugs.python.org/file10698/test_broken3.py ___ Python tracker [EMAIL PROTECTED] http://bugs.python.org/issue2378 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue2378] UnboundLocalError when trying to raise exceptions inside execfile
alejandro david weil [EMAIL PROTECTED] added the comment:
Some debugging helper code and my conclutions of one work day:
debughelper.tgZ:
-test_broken1/2.py
one does triggers the bug, the other doesn't)
-rtest.sh
executes boths and compares its outputs
-frameobject.c.diff
applied to Objects/frameobject.c, adds some debug info.
What I found:
1. The CustomException is disappearing from locals()
2. PyFrame_FastToLocals() (from that .c file) is updating the locals,
and removing that exception from there.
3. In the failing case this code:
if (deref) {
assert(PyCell_Check(value));
value = PyCell_GET(value);
}
is returning value==NULL.
Don't know why that happens.
But you could inspect out1.txt/out2.txt made with rtest.sh, and could
discover something..
Added file: http://bugs.python.org/file10699/debughelper.tgz
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[issue2378] UnboundLocalError when trying to raise exceptions inside execfile
Nikolas Coukouma [EMAIL PROTECTED] added the comment: I can't reproduce this with r63075... -- nosy: +nikolasco __ Tracker [EMAIL PROTECTED] http://bugs.python.org/issue2378 __ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue2378] UnboundLocalError when trying to raise exceptions inside execfile
Pedro Werneck [EMAIL PROTECTED] added the comment: I get it with r63075, r63085, on Linux. __ Tracker [EMAIL PROTECTED] http://bugs.python.org/issue2378 __ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue2378] UnboundLocalError when trying to raise exceptions inside execfile
Pedro Werneck [EMAIL PROTECTED] added the comment: Just note the error happens even without the try/except block inside the 'if' statement. -- nosy: +werneck __ Tracker [EMAIL PROTECTED] http://bugs.python.org/issue2378 __ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue2378] UnboundLocalError when trying to raise exceptions inside execfile
New submission from Jerry Seutter [EMAIL PROTECTED]:
Found a bug when trying to integrate figleaf coverage into trunk. I
have ripped the code down to the smallest subset that still causes the
behaviour. The code works on the latest release of Python 2.5 but is
broken on trunk. It comes in two files. The first is the caller (figleaf):
import os
import sys
def foo(f, e, o):
pass
sys.settrace(foo)
import __main__
execfile('test_broken.py', __main__.__dict__)
The second file is the test (test_broken.py):
# This code breaks on trunk
def test_foo():
class CustomException(Exception):
pass
class SomeClass:
def foo(self):
raise CustomException
# The error only appears with enough nested blocks.
if (True == True):
try:
raise IOError
except CustomException:
pass
It should raise IOError. When run, it gives the following output:
jerry-seutters-computer:~/code/python/core_wierd_bug_minimal jseutter$
../core/python.exe figleaf
Traceback (most recent call last):
File figleaf, line 10, in module
execfile('test_broken.py', __main__.__dict__)
File test_broken.py, line 18, in module
test_foo()
File test_broken.py, line 15, in test_foo
except CustomException:
UnboundLocalError: local variable 'CustomException' referenced before
assignment
[10019 refs]
--
files: core_wierd_bug_minimal.zip
messages: 63856
nosy: jseutter
severity: normal
status: open
title: UnboundLocalError when trying to raise exceptions inside execfile
type: behavior
versions: Python 2.6
Added file: http://bugs.python.org/file9716/core_wierd_bug_minimal.zip
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[issue2378] UnboundLocalError when trying to raise exceptions inside execfile
Changes by Jerry Seutter [EMAIL PROTECTED]: -- components: +Interpreter Core __ Tracker [EMAIL PROTECTED] http://bugs.python.org/issue2378 __ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
