Python Basic Tutorial Summary 5--function

1. Function creation

1). function code block starts with DEF keyword, followed by function identifier name and parentheses ()
2). Any incoming parameters and arguments must be placed in the middle of the parentheses. Parentheses can be used to define parameters
3). The first line of the function statement can optionally use the document string-for storing function descriptions
4). function contents start with a colon and indent
5). Return[expression] End Function, optionally returning a value to the caller. Return without an expression is equivalent to returning None

def functionname (parameters):   "Function _ Document String"   function_suite   return [expression]

　　

function parameters

Scope

Recursive

Python Basic Tutorial Summary 5--function