I downloaded source code of Python, open it in Qt Creator, but not even found project- file (*.pro). How I can quickly start in learning python source- code?
CPython is a huge codebase, and you should expect that building a mental model of it will be a long process. Download the source code now and begin poking around, spending five or ten minutes when you’re curious about something. Over time, you’ll get faster and more rigorous, and the process will get easier.