Basic syntax and characteristics of python-function

What is a function?

function is derived from mathematics, but the concept of "function" in programming is very different from the function in mathematics, the specific difference, we will say later, the function of programming in English also has a lot of different names. In basic it is called subroutine (sub-process or subroutine), in Pascal is called procedure (process) and function, in C only function, in Java is called method.

Definition: A function that encapsulates a set of statements by a name (function name), and to execute the function, simply call the name of its functions

Characteristics:

Reduce duplicate code

To make the program extensible

Make programs easier to maintain

Syntax Definitions:

def name ():# function name    print("Hello, I ' m yue! "  # Call function

Also available with parameters:

A B =a**bprint# is changed to write def  Calc (x, y) with a function:    = x**y    return# returns function execution result  = Calc (A, B) # result assigned to c variable  Print(c)

Basic syntax and characteristics of python-function