Traceback (most recent call last):


 "<string>", line 1, in <module>
ModuleNotFoundError: No module named 'tests'

Traceback (most recent call last):


 "/home/travis/virtualenv/python3.9-dev/bin/pip", line 6, in <module>

from pip._internal.cli.main import main
ModuleNotFoundError: No module named 'pip'
