Lesson 7 — args & kwargs

Flexible parameters

Sometimes a function should accept any number of arguments. *args collects extra positional arguments into a tuple, and **kwargs collects named ones into a dict. The names args and kwargs are just a convention; the stars do the work.

def show(*args, **kwargs):
    print(args, kwargs)
show(1, 2, color="red")  # (1, 2) {'color': 'red'}

Why it matters: print(), logging helpers and many library functions use this to stay flexible.