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pythonpython-2.7python-importimporterror

ImportError: No module named mock

So I am trying to use unittest.mock to mock some of my methods in my unit tests. I do:

from unittest.mock import MagicMock
f = open("data/static/mock_ffprobe_response")
subprocess.check_output = MagicMock(return_value=f.read())
f.close()

But I am getting:

ImportError: No module named mock

I tried:

pip install mock

It's still not working.

Solution

  • unittest is a built-in module; mock is an external library (pre-3.3 betas, anyway). After installing mock via pip install, you import it not by using

    from unittest.mock import MagicMock

    but

    from mock import MagicMock

    Edit: mock has been included in the unittest module (since Python3.3), and can be imported by import unittest.mock.