fix python path if working locally

[authierj]

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• Mentioned all issues that this PR fixes or addresses.
• Summarized the updates of this PR under Summary.
• Added an entry under Unreleased in the Changelog.

Fixes #2690.

Summary

Added fix_pythonpath_if_working_locally() to the jupyter notebook.

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Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 94.12%. Comparing base (cda8f81) to head (ae749d9).
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2691      +/-   ##
==========================================
- Coverage   94.20%   94.12%   -0.08%     
==========================================
  Files         141      141              
  Lines       15569    15569              
==========================================
- Hits        14666    14654      -12     
- Misses        903      915      +12     

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[dennisbader]

Looks great, thanks a lot @authierj 🚀