import delegator from pipenv.utils import python_version FULL_PYTHON_PATH = 'C:\\Python36-x64\\python.exe' class TestUtilsWindows(): def test_python_version_from_full_path(self): print(delegator.run('{0} --version'.format(FULL_PYTHON_PATH)).out) assert python_version(FULL_PYTHON_PATH) == "3.6.1"