[New-bugs-announce] [issue7268] 2to3 execfile conversion changes behavior

[flashk]

New submission from flashk <flashk at gmail.com>:

I recently ran 2to3 on some of my scripts and noticed a change in behavior.

I had a script that used the built-in execfile function. After the conversion, it was 
changed to manually open the file and read the contents into the exec function. Now I am 
getting a SyntaxError with the modified code.

The SyntaxError is caused when the new exec code is called on a script that ends with an 
empty indented line. I'm not sure if this is an error with the 2to3 script or the built-
in exec function.

I've attached a very minimal test case. The test.py file is a simple hello world script 
that ends with an empty indented line. The execfile_example.py file simply calls 
execfile on the test.py script. The execfile_example_converted.py file is the 2to3 
converted version of execfile_example.py.

I'm running Python 2.6.2 on Windows XP.

----------
components: 2to3 (2.x to 3.0 conversion tool), Interpreter Core
files: execfile_problem.zip
messages: 94949
nosy: flashk
severity: normal
status: open
title: 2to3 execfile conversion changes behavior
type: behavior
versions: Python 2.6
Added file: http://bugs.python.org/file15267/execfile_problem.zip

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue7268>
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