MIT Gentle Introduction, Session #8 of 11: "Inheritance"

Spoke too soon. 2 hours work today (Tues), and barely got through one exercise. Did not implement even that one according to suggested method/way. Fatigue, poor concentration. External demands on my energy. :P

Weds: day "off", read some textbook, finished last bits of Codecademy Python.
Thurs: 2.5 hours, was able to finish the Homework (Homework 4): making Tetris blocks.

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