PAWS upgrading to pywikibot 7.0.0 there are some breaking changes:

Support of Python 3.5.0 - 3.5.2 has been dropped (T286867) generate_user_files.py, generate_user_files.py, shell.py and version.py were moved to pywikibot/scripts and must be used with pwb wrapper script With some more in the Code cleanups section of the changelog: https://doc.wikimedia.org/pywikibot/stable/changelog.html