$ ./python -m test -v -m test_patch_propogrates_exc_on_exit test_unittest
...
test_patch_propogrates_exc_on_exit (unittest.test.testmock.testpatch.PatchTest) ... ERROR

======================================================================
ERROR: test_patch_propogrates_exc_on_exit (unittest.test.testmock.testpatch.PatchTest)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/home/serhiy/py/cpython/Lib/unittest/test/testmock/testpatch.py", line 1699, in test_patch_propogrates_exc_on_exit
    self.assertRaises(RuntimeError, test)
  File "/home/serhiy/py/cpython/Lib/unittest/case.py", line 743, in assertRaises
    return context.handle('assertRaises', args, kwargs)
  File "/home/serhiy/py/cpython/Lib/unittest/case.py", line 178, in handle
    callable_obj(*args, **kwargs)
  File "/home/serhiy/py/cpython/Lib/unittest/mock.py", line 1183, in patched
    arg = patching.__enter__()
  File "/home/serhiy/py/cpython/Lib/unittest/mock.py", line 1239, in __enter__
    self.target = self.getter()
  File "/home/serhiy/py/cpython/Lib/unittest/mock.py", line 1409, in <lambda>
    getter = lambda: _importer(target)
  File "/home/serhiy/py/cpython/Lib/unittest/mock.py", line 1092, in _importer
    thing = __import__(import_path)
ModuleNotFoundError: No module named 'squizz'

----------------------------------------------------------------------