Oh my god, this is completely the same with my own thoughts!

Just try to make yourself replaceable as much as possible.

Then you can focus on more important things, like learning new stuff, or solving more challenging problems.

軟體工程師的修煉與成長-8-讓自己可以被取代

Cool learning tutorials for Python newbee.

Code. Simply. Clearly. Calmly.

Python Threading: The Complete Guide