wtfpython.py

gistfile1.txt

from testing import mocks 

mocks.email  # works
# mocks.user doesn't work even though there's a testing/mocks/user.py files
import testing.mocks.user  # works fine
mocks.user # now works: wtf???

I have the following tree:

├── test.py
└── testing
├── __init__.py
└── mocks
├── __init__.py
├── email.py
└── user.py

I'm only able to import mocks.email and mocks.users if I ask python to import them by name.

from testing import mocks

mocks.email # doesn't work

import testing.mocks.email
mocks.email # works
mocks.user # doesn't work

@oremj, @kumar303,

Okay interesting - so it seems like it's a side effect of having had imported it elsewhere in the code.

sys.modules is just a dict with keys like sys.modules['testing.mocks.email'] -- it's available to all modules everywhere in python. This is useful for many things like shared memory but is not useful for things like isolated dependency trees (the way npm install does that in node.js). As far as I can tell, you cannot implement isolated dependencies a la node in Python. setuptools tried to do this with crazy hacks but ultimately failed. It was too much magic.