下表列出了从最高优先级到最低优先级的所有运算符，如下所示

序号运算符描述
1**指数(次幂)运算
2~ + -补码，一元加减(最后两个的方法名称是+@和-@)
3* / % //乘法，除法，模数和地板除
4+ -加法减法
5>> <<向右和向左位移
6&按位与
7^ |按位异或和常规的“OR”
8<= < > >=比较运算符
9<> == !=等于运算符
10= %= /= //= -= += *= **=赋值运算符
11is is not身份运算符
12in not in成员运算符
13not or and逻辑运算符

实例

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#! /usr/bin/env python
#coding=utf-8
#save file : operators_precedence_example.py

#!/usr/bin/python3

a = 20
b = 10
c = 15
d = 5

print ("a:%d b:%d c:%d d:%d" % (a,b,c,d ))
e = (a + b) * c / d       #( 30 * 15 ) / 5
print ("Value of (a + b) * c / d is ",  e)

e = ((a + b) * c) / d     # (30 * 15 ) / 5
print ("Value of ((a + b) * c) / d is ",  e)

e = (a + b) * (c / d)    # (30) * (15/5)
print ("Value of (a + b) * (c / d) is ",  e)

e = a + (b * c) / d      #  20 + (150/5)
print ("Value of a + (b * c) / d is ",  e)

以上实例输出结果为:

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Value of (a + b) * c / d is  90.0
Value of ((a + b) * c) / d is  90.0
Value of (a + b) * (c / d) is  90.0
Value of a + (b * c) / d is  50.0