Indentation can be (and should be) tabs, EOL is it’s its own thing either \n or CRLF which Python source code did actually care about as recently as 2.3.
Assumptions like this is why most people should stick to verbose languages with lots of guardrail braces.
This is a really neat idea. I’m frequently put off by large highly distributed (among files and dependencies) codebases with no obvious entry point. I wanted to make some changes to GNU’s mailutils and the code felt genuinely incomprehensible (BSD’s implementation of mail was a bit easier).
Perhaps another approach is to parse ptrace.