Replace deprecated imp module with importlib #904

Code Version

master

Expected Behavior

Works with Python 3.12.

Current Behavior

This project uses the imp module which has been deprecated since Python 3.4 and removed in 3.12:

• Raised PendingDeprecationWarning since 3.4 (2014)
• Raised DeprecationWarning since 3.5 (2015)
• Updated DeprecationWarning to say removal in 3.12 since 3.10 (2021)
• Removal planned for 3.12 (2023)

Python 3.12 is set for release on 2023-10-02 and this library is one of the top 5,000 most-downloaded from PyPI.

Possible Solution

Please could you upgrade to use importlib? The imp docs have suggestions on what to use to replace each function and constant.

Steps to Reproduce

1. git grep "\bimp\b"