pysnooper
https://pypi.org/project/PySnooper/
PySnooper is a poor man's debugger. If you've used Bash, it's like set -x for Python, except it's fancier.
Tutorial
[PySnooper: Debugging Made Easy, No More Print Statements!🖨️ | by Manoj Das | Medium
https://medium.com/@HeCanThink/pysnooper-debugging-made-easy-no-more-print-statements-%EF%B8%8F-a6fb30a9709a
【Python】もうprintデバッグはいらない？ / PySnooperで楽々デバッキング - フリーランチ食べたい
]
#
debugger