It is obvious that global variable are always shared and in most cases this isn’t a problem. However, suppose you have some existing code that makes use of a global variable to store its state and we ...

Threading is the most basic way to implement async code but for Python threading is complicated by the GIL. Find out the basics of threading in this extract from my new book Programmer's Python: Async ...

Probably the biggest change for Python over the last five years or so is the advent of the "free-threaded" version of the language, which removes the global interpreter lock (GIL) and allows multiple ...