Can this be closed? I can't reproduce.

$ python -c 'from library.a.a import go; go()'
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/usr/lib/a/a/__init__.py", line 2, in go
    raise AssertionError('dummy')
AssertionError: dummy
$ python -c 'from library.a import go; go()'
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/usr/lib/a/__init__.py", line 2, in go
    raise AssertionError('dummy')
AssertionError: dummy
$ python -c 'from library import go; go()'
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/usr/lib/__init__.py", line 2, in go
    raise AssertionError('dummy')
AssertionError: dummy