Python算术运算符实例详解

Python算术运算符

以下假设变量a为10,变量b为20:

运算符描述实例
+加 - 两个对象相加a + b 输出结果 30
-减 - 得到负数或是一个数减去另一个数a - b 输出结果 -10
*乘 - 两个数相乘或是返回一个被重复若干次的字符串a * b 输出结果 200
/除 - x除以yb / a 输出结果 2
%取模 - 返回除法的余数b % a 输出结果 0
**幂 - 返回x的y次幂a**b 输出结果 20
//取整除 - 返回商的整数部分9//2 输出结果 4 , 9.0//2.0 输出结果 4.0

以下实例演示了Python所有算术运算符的操作:

#!/usr/bin/python

a = 21

b = 10

c = 0

c = a + b

print "Line 1 - Value of c is ", c

c = a - b

print "Line 2 - Value of c is ", c

c = a * b

print "Line 3 - Value of c is ", c

c = a / b

print "Line 4 - Value of c is ", c

c = a % b

print "Line 5 - Value of c is ", c

a = 2

b = 3

c = a**b

print "Line 6 - Value of c is ", c

a = 10

b = 5

c = a//b

print "Line 7 - Value of c is ", c

以上实例输出结果:

Line 1 - Value of c is 31

Line 2 - Value of c is 11

Line 3 - Value of c is 210

Line 4 - Value of c is 2

Line 5 - Value of c is 1

Line 6 - Value of c is 8

Line 7 - Value of c is 2

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