The ability to execute code in parallel is crucial in a wide variety of scenarios. Concurrent programming is a key asset for web servers, producer/consumer models, batch number-crunching and pretty ...

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 ...