This post explains how to use a Python function call, how to pass variables, and how to use these features to build powerful, flexible programs.

That is how to define a function in Python: it really is that easy, which is why so many people love Python! If you want to learn a bit more about using functions, check out How to call a function ...

In Python, the mere act of making a function call incurs a relatively large amount of overhead. If some function is called repeatedly in a tight loop, even if it isn’t a long-running function ...

Take advantage of the high-level async functions in Python’s asyncio library to write more efficient Python applications.