Uninstall the python package then install it using:
python -m pip install -e c:\users\worker\src\clockwork\lib\credentials
What is probably happening is that you have multiple python installs and pip is run from one install while you are trying to use the package from another. See also:
- What’s the difference between pip install and python -m pip install?
- https://docs.python.org/3/installing/#basic-usage