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y b / 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 ab 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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