When linking to code on GitHub in an article like this, for posterity, it’s a good idea to link based on a specific commit instead of a branch.
It might be a good idea to change your link to the `Py_CompileStringObject()` function in CPython’s `Python/pythonrun.c` [0] to a commit-based link [1].
Side note: Your tool, Tach, seems interesting…you might want to ask @dang [0] via email [1] if he’d be willing to add your submission [2] to the second-chance pool [3] (maybe also provide a clearer and more technical explanation of the tool and its key features).