ImportError: cannot import name 'l_' from 'sphinx.locale'

[jhadjar]

Running python -m unittest or coverage run -m unittest discover both raise an ImportError exception:

ImportError: Failed to import test module: gastrodon.domain
Traceback (most recent call last):
  File "/usr/local/lib/python3.7/unittest/loader.py", line 470, in _find_test_path
    package = self._get_module_from_name(name)
  File "/usr/local/lib/python3.7/unittest/loader.py", line 377, in _get_module_from_name
    __import__(name)
  File "/home/jugurtha/workspace/python/gastrodon/gastrodon/domain/__init__.py", line 11, in <module>
    from sphinx.locale import l_, _
ImportError: cannot import name 'l_' from 'sphinx.locale' (/home/jugurtha/workspace/python/gastrodon/venv/lib/python3.7/site-packages/sphinx/locale/__init__.py)

According to this commit sphinx-doc/sphinx@8d653a4, the l_() function was integrated into _().

Recommended action:

Change the line:

    from sphinx.locale import l_, _

to

    from sphinx.locale import _

Running python -m unittest executes with the following results

----------------------------------------------------------------------
Ran 0 tests in 0.000s

OK

Note: The exception mentioned in #9 also was raised, and the proposed changes in mkdocstrings/mkdocstrings#2 were added not to have that error. These are also the changes proposed in #5