What is an operator? The role of Python operators and the meaning of each python operator

What is an operator?

This chapter mainly explains Python’s operators. Let’s take a simple example: 4 5 = 9. In the example, 4 and 5 are called operands, and " " is called the operator.

Python language supports the following types of operators:

1. Arithmetic operators

2. Comparison (relational) operators

3. Assignment operations Operator

4. Logical operator

5. Bit operator

6. Member operator

7. Identity operator

8.Operator precedence

Next let’s learn Python’s operators one by one.

Python arithmetic operators

The following assume variables: a=10, b=20:

#!/usr/bin/python# 
-*- coding: UTF-8 -*-
 a = 21
 b = 10
 c = 0
 c = a + b
 print "1 - c 的值为：", c
 
 c = a - b
 print "2 - c 的值为：", c 
 
 c = a * b
 print "3 - c 的值为：", c 
 
 c = a / b
 print "4 - c 的值为：", c 
 
 c = a % b
 print "5 - c 的值为：", c
 
 # 修改变量 a 、b 、c
 a = 2
 b = 3
 c = a**b
 print "6 - c 的值为：", c
 
 a = 10
 b = 5
 c = a//b 
 print "7 - c 的值为：", c

3 - The value of c is: 210

4 - The value of c is: 2

5 - The value of c is: 1

6 - The value of c is: 8

7 - The value of c is: 2

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