Bugs item #1674503, was opened at 2007-03-05 16:38
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Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Jonathan Griffitts (jcgriffitts)
Assigned to: Nobody/Anonymous (nobody)
Summary: execfile() response to syntax errors

Initial Comment:
Python 2.5 seems to have an anomaly when execfile() encounters syntax errors.  

If I use execfile() to execute a file that contains a syntax error, it throws 
the expected SyntaxError exception but does not close the source file.  Since 
the file is still open, an external program can't modify it to fix the syntax 
error.

I have noticed this problem in Python 2.5 on Windows 2000 and Windows XP.  I 
tried to reproduce it on Python 2.3 on BSD Unix but it didn't seem to happen 
there.


---------------- spam.py ---------------------

[intentional-syntax-error)
----------------------------------------------

The following is my console session:

----------------------------------------------
Python 2.5 (r25:51908, Sep 19 2006, 09:52:17) [MSC v.1310 32 bit 
(Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> execfile('spam.py')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "spam.py", line 1
    [intentional-syntax-error)
                             ^
SyntaxError: invalid syntax
>>>
----------------------------------------------

At this point file spam.py remains open until Python exits.  There's no obvious 
way to close the file from within the script because there is no file object.  
Under Windows, this prevents spam.py from being edited, 
renamed, or deleted.


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You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=105470&aid=1674503&group_id=5470
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