[TimothyFitz]

Cool, but unfortunately it breaks if the code your testing does from datetime import datetime :(

https://gist.github.com/4261936

[spulec]

Hey Timothy, thanks for the response. You are correct. I'll add a warning to the library and work on a solution. Unfortunately, I think it will need to involve ctypes.

[subleq]

Have you tried patching the now() method onto datetime.datetime instead of replacing the whole class? If that doesn't work, you could replace datetime first:

    import freezegun; freezegun.monkey_patch()
    from datetime import datetime

After that, freeze_time would just set a flag on your datetime class.