What sets the debug variable in a production Django / WSGI based site?

Question

The python documentation defines a global constant named __debug__ :

__debug__

This constant is true if Python was not started with an -O option. See also the assert statement.

I'm using some python library under my production Django site (Apache/WSGI based) which checks this constant before executing debug-only code.To my surprise, that code is being executed in production.

As the Django site was not started via the python command line interperter, I was wondering what controls this __deubg__ constant?

score 1 · Answer 1 · answered Mar 11 '13 at 15:24

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For the sake of all who follow, this is the wsgi directive you are looking for: WSGIPythonOptimize

The documentation states:

The default is '0' which means no optimisations are applied.

So in the default case __debug__ would be True.

answered Mar 11 '13 at 15:24

turtlemonvh

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score 1 · Accepted Answer · answered Feb 17 '11 at 14:10

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Looks like you can use the PYTHONOPTIMIZE environment variable. You may need to set it from your apache configuration... Not too sure I haven't used the standard WSGI setup in a long time.

answered Feb 17 '11 at 14:10

meshantz

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Thanks, this helped me solve my problem too. All I had to do was "export PYTHONOPTIMIZE=1" before running "manage.py runserver" – tom Oct 01 '14 at 14:52

score 0 · Answer 3 · edited Aug 14 '12 at 20:12

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Is settings.DEBUG set to False?

edited Aug 14 '12 at 20:12

girasquid

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answered Feb 17 '11 at 13:42

lprsd

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Yes. It seems to have no effect. – Boaz Feb 17 '11 at 13:55

What sets the __debug__ variable in a production Django / WSGI based site?

3 Answers3

What sets the debug variable in a production Django / WSGI based site?