Welcome to Python.org Python programming language object oriented web free open source software license documentation download community

The official home of the Python Programming Language

Notice: While JavaScript is not essential for this website, your interaction with the content will be limited. Please turn JavaScript on for the full experience. Search This Site GO >>> def fib(n): >>> a, b = 0, 1 >>> while a < n: >>> print(a, end= ) >>> a, b = b, a+b >>> print() >>> fib(1000) Functions Defined The core of extensible programming is defining functions. Python allows mandatory and optional arguments, keyword arguments, and even arbitrary argument lists. >>> fruits = [Banana, Apple, Lime] >>> loud_fruits = [fruit.upper() for fruit in fruits] >>> print(loud_fruits) >>> list(enume