Fixed wrong Python object name for UTC in C module

[girogiro]

Python object name for UTC is lowercase 'utc'. The bug sometimes results in error: bson.errors.InvalidBSON: 'module' object has no attribute 'UTC' when reading from the database.

[behackett]

Thanks for reporting this. I'm surprised no one has ever hit this before.

[behackett]

I see where this crept in. This is a new problem in PyMongo 2.7. Thanks again for reporting it and providing a patch.

@girogiro - Are you using mod_wsgi? If so, you should read the docs for using PyMongo and mod_wsgi:

http://api.mongodb.org/python/current/examples/mod_wsgi.html#pymongo-and-mod-wsgi

This exception should only happen if the code is running in a python sub-interpreter.

[behackett]

Merged to the v2.7 and 3.0-dev branches. Thanks again for the report and patch. I've opened a ticket to track the issue here:

https://jira.mongodb.org/browse/PYTHON-695

[girogiro]

@behackett Yes, I am using mod_wsgi. I took me hours to find the problem, searching first in Eve REST API framework I am working with, then in Flask microframework it is based on, then in PyMongo and finally in its C-extensions while checking for errors in Apache log.

Thanks for the advice. I've modified the Apache conf according to the referenced guidelines.