__pycache__ 이거는 무슨 폴더인가

파이썬 3.2 때부터 바꼈다고함

신경안써도 된다고하는데...

stackoverflow에 이런 답변이

When you run a program in python, the interpreter compiles it to bytecode first (this is an oversimplification) and stores it in the __pycache__ folder. If you look in there you will find a bunch of files sharing the names of the .py files in your project's folder, only their extentions will be either .pyc or .pyo. These are bytecode-compiled and optimized bytecode-compiled versions of your program's files, respectively.