[issue12064] unexpected behavior with exception variable

2011-05-13 Thread Mark Dickinson 

Changes by Mark Dickinson :


--
superseder:  -> except-as in Py3 eats variables

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[issue12064] unexpected behavior with exception variable

2011-05-12 Thread Ezio Melotti 

Ezio Melotti  added the comment:

Closing as duplicate.

--
nosy: +ezio.melotti
resolution:  -> duplicate
stage:  -> committed/rejected
status: open -> closed

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[issue12064] unexpected behavior with exception variable

2011-05-12 Thread Santoso Wijaya 

Santoso Wijaya  added the comment:

Looks like a regression from 2.x.

On 2.7:
Python 2.7.1 (r271:86832, Nov 27 2010, 17:19:03) [MSC v.1500 64 bit (AMD64)] on
win32
Type "help", "copyright", "credits" or "license" for more information.
>>> e = True
>>> try: raise Exception()
... except Exception as e: pass
...
>>> print repr(e)
Exception()

On 3.2:
Python 3.2 (r32:88445, Feb 20 2011, 21:30:00) [MSC v.1500 64 bit (AMD64)] on win
32
Type "help", "copyright", "credits" or "license" for more information.
>>> e = True
>>> try: raise Exception()
... except Exception as e: pass
...
>>> print(repr(e))
Traceback (most recent call last):
  File "", line 1, in 
NameError: name 'e' is not defined

--
nosy: +santa4nt
versions: +Python 3.1, Python 3.3

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[issue12064] unexpected behavior with exception variable

2011-05-12 Thread Eric Snow 

Eric Snow  added the comment:

Duplicate of issue8130.

"When an exception has been assigned using as target, it is cleared at the end 
of the except clause." [1]

See: 
[1] http://docs.python.org/py3k/reference/compound_stmts.html#the-try-statement
[2] http://www.python.org/dev/peps/pep-3110/#semantic-changes (discussed in 
issue4617)

--
nosy: +ericsnow

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[issue12064] unexpected behavior with exception variable

2011-05-12 Thread Mathias Svensson 

New submission from Mathias Svensson :

Current behavior:
In the very simple attached example an existing variable-name is used as the 
target in the except-part of a try-statement. The existing variable is deleted 
if an exception is throw.

Excepted behavior:
The only reasonable behaviors are keeping the original variable or keeping the 
exception. The current behavior is very unintuitive.

--
components: Interpreter Core
files: test.py
messages: 135845
nosy: Mathias.Svensson
priority: normal
severity: normal
status: open
title: unexpected behavior with exception variable
type: behavior
versions: Python 3.2
Added file: http://bugs.python.org/file21984/test.py

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