[issue10128] multiprocessing.Pool throws exception with __main__.py

2015-11-18 Thread Marc Schlaich 

Marc Schlaich added the comment:

Please see my latest comments to https://github.com/pypa/pip/issues/1891. 

tl;dr It is related to the -m switch as pip's wheel launcher does 
  PYTHONPATH=script.exe python -m __main__

--

___
Python tracker 

___
___
Python-bugs-list mailing list
Unsubscribe: 
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue10128] multiprocessing.Pool throws exception with __main__.py

2015-11-18 Thread Nick Coghlan 

Nick Coghlan added the comment:

Thanks for the investigation Marc.

I'd been hesitant to backport the mitigation patch in #10845 to 2.7.x, (as it 
*does* represent a behavioural change), but if that code path is currently 
hitting an assert statement anyway, it seems reasonable to make the change for 
2.7.11+

--

___
Python tracker 

___
___
Python-bugs-list mailing list
Unsubscribe: 
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue10128] multiprocessing.Pool throws exception with __main__.py

2015-11-18 Thread Roundup Robot 

Roundup Robot added the comment:

New changeset 5d88c1d413b9 by Nick Coghlan in branch '2.7':
Close #10128: don't rerun __main__.py in multiprocessing
https://hg.python.org/cpython/rev/5d88c1d413b9

--
nosy: +python-dev
resolution:  -> fixed
stage:  -> resolved
status: open -> closed

___
Python tracker 

___
___
Python-bugs-list mailing list
Unsubscribe: 
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue10128] multiprocessing.Pool throws exception with __main__.py

2015-02-23 Thread Marc Schlaich 

Marc Schlaich added the comment:

Please fix this. Scripts with multiprocessing bundled as wheels are broken with 
Python 2.7 on Windows: https://github.com/pypa/pip/issues/1891

--
nosy: +schlamar

___
Python tracker rep...@bugs.python.org
http://bugs.python.org/issue10128
___
___
Python-bugs-list mailing list
Unsubscribe: 
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue10128] multiprocessing.Pool throws exception with __main__.py

2014-03-12 Thread Martin Dengler 

Changes by Martin Dengler mar...@martindengler.com:


--
nosy: +mdengler

___
Python tracker rep...@bugs.python.org
http://bugs.python.org/issue10128
___
___
Python-bugs-list mailing list
Unsubscribe: 
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue10128] multiprocessing.Pool throws exception with __main__.py

2014-03-12 Thread Martin Dengler 

Martin Dengler added the comment:

I applied the patch from #10845 to 2.7.6 and it worked well for me.

--

___
Python tracker rep...@bugs.python.org
http://bugs.python.org/issue10128
___
___
Python-bugs-list mailing list
Unsubscribe: 
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue10128] multiprocessing.Pool throws exception with __main__.py

2011-12-21 Thread Nick Coghlan 

Nick Coghlan ncogh...@gmail.com added the comment:

The fix from #10845 should be backported to Python 2.7 (bypassing the assertion 
isn't enough - you want to skip re-executing __main__ entirely)

--
nosy: +ncoghlan

___
Python tracker rep...@bugs.python.org
http://bugs.python.org/issue10128
___
___
Python-bugs-list mailing list
Unsubscribe: 
http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue10128] multiprocessing.Pool throws exception with __main__.py

2010-10-20 Thread Ask Solem 

Changes by Ask Solem a...@opera.com:


--
resolution:  - invalid
status: open - closed

___
Python tracker rep...@bugs.python.org
http://bugs.python.org/issue10128
___
___
Python-bugs-list mailing list
Unsubscribe: 
http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue10128] multiprocessing.Pool throws exception with __main__.py

2010-10-20 Thread Michael Olson 

Michael Olson ol...@irinim.net added the comment:

Ummm, I think I've been unclear on where I was making changes, I changed 
lib\multiprocessing\forking.py to fix the issue.

Patch attached.

--
keywords: +patch
resolution: invalid - 
status: closed - open
Added file: http://bugs.python.org/file19296/issue10128.patch

___
Python tracker rep...@bugs.python.org
http://bugs.python.org/issue10128
___
___
Python-bugs-list mailing list
Unsubscribe: 
http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue10128] multiprocessing.Pool throws exception with __main__.py

2010-10-20 Thread Michael Olson 

Michael Olson ol...@irinim.net added the comment:

As a note, I didn't attach a patch at first because I was fairly sure I was 
kludging it into submission, but at least this makes it clear as to what I did.

v/r
-- Michael Olson

--

___
Python tracker rep...@bugs.python.org
http://bugs.python.org/issue10128
___
___
Python-bugs-list mailing list
Unsubscribe: 
http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue10128] multiprocessing.Pool throws exception with __main__.py

2010-10-19 Thread Ask Solem 

Ask Solem a...@opera.com added the comment:

Is this on Windows?  Does it work for you now?

--

___
Python tracker rep...@bugs.python.org
http://bugs.python.org/issue10128
___
___
Python-bugs-list mailing list
Unsubscribe: 
http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue10128] multiprocessing.Pool throws exception with __main__.py

2010-10-19 Thread Michael Olson 

Michael Olson ol...@irinim.net added the comment:

Sorry about that, yes, this is on Windows XP and 7, 32 bit.

And with the if statement it seems to work fine.

v/r
-- Michael Olson

--

___
Python tracker rep...@bugs.python.org
http://bugs.python.org/issue10128
___
___
Python-bugs-list mailing list
Unsubscribe: 
http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue10128] multiprocessing.Pool throws exception with __main__.py

2010-10-17 Thread Michael Olson 

Michael Olson ol...@irinim.net added the comment:

I wrapped the offending assertion in a if main_name != '__main__'. I considered 
not checking the module_name against built-in modules but that seemed likely to 
be the sort of thing being guarded against, so I left it at an exception for 
__main__.

Ran a few trivial testing using Pool and Process and it seems to work fine.

--

___
Python tracker rep...@bugs.python.org
http://bugs.python.org/issue10128
___
___
Python-bugs-list mailing list
Unsubscribe: 
http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue10128] multiprocessing.Pool throws exception with __main__.py

2010-10-16 Thread Michael Olson 

New submission from Michael Olson ol...@irinim.net:

In an application with an entry point of __main__.py, multiprocessing.Pool 
throws the following:

Traceback (most recent call last):
  File string, line 1, in module
  File D:\Dev\Python27\lib\multiprocessing\forking.py, line 346, in main
prepare(preparation_data)
  File D:\Dev\Python27\lib\multiprocessing\forking.py, line 454, in prepare
assert main_name not in sys.modules, main_name
AssertionError: __main__

These messages repeat as long as the application is running.

Demonstration Code, must be in file named __main__.py:

import multiprocessing
import time

if __name__ == '__main__':
pool = multiprocessing.Pool()
time.sleep(2)


--
components: Library (Lib)
messages: 118905
nosy: Michael.Olson
priority: normal
severity: normal
status: open
title: multiprocessing.Pool throws exception with __main__.py
type: behavior
versions: Python 2.7

___
Python tracker rep...@bugs.python.org
http://bugs.python.org/issue10128
___
___
Python-bugs-list mailing list
Unsubscribe: 
http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue10128] multiprocessing.Pool throws exception with __main__.py

2010-10-16 Thread Ned Deily 

Changes by Ned Deily n...@acm.org:


--
nosy: +jnoller

___
Python tracker rep...@bugs.python.org
http://bugs.python.org/issue10128
___
___
Python-bugs-list mailing list
Unsubscribe: 
http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com

[issue10128] multiprocessing.Pool throws exception with __main__.py

2010-10-16 Thread R. David Murray 

Changes by R. David Murray rdmur...@bitdance.com:


--
nosy: +asksol

___
Python tracker rep...@bugs.python.org
http://bugs.python.org/issue10128
___
___
Python-bugs-list mailing list
Unsubscribe: 
http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com