假设变量a=10和变量b=20，那么
| 运算符 | 描述 | 示例 |
|---|---|---|
| = |
将操作符的右侧操作数赋值给左侧的操作数
|
c = a + b 就是将 a + b 的值赋给 c |
| += |
它将右操作数和左操作数相加并分配结果给左操作数
|
c += a 相当于 c = c + a |
| -= |
左操作数减去右操作数，并把结果赋给左操作数
|
c -= a 相当于 c = c - a |
| *= |
左操作数乘以右操作数并分配结果给左操作数
|
c *= a 相当于 c = c * a |
| /= |
把左操作数除以右操作数，并把结果赋给左操作数
|
c /= a 相当于 c = c / a；c /= a相当于 c = c / a |
| %= |
两个操作数取模，并把结果赋给左操作数
|
c %= a 相当于 c = c % a |
| **= |
执行运算符指数(幂)计算并分配值给左操作数
|
c **= a 相当于c = c ** a |
| //= |
这对操作符两侧的操作数进行地板除并赋值给左操作数
|
c //= a 相当于 c = c // a |
实例
假设变量 a = 10，变量b = 20，那么 -
#!/usr/bin/python3
a = 21
b = 10
c = 0
c = a + b
print ("Line 1 - Value of c is ", c)
c += a
print ("Line 2 - Value of c is ", c )
c *= a
print ("Line 3 - Value of c is ", c )
c /= a
print ("Line 4 - Value of c is ", c )
c = 2
c %= a
print ("Line 5 - Value of c is ", c)
c **= a
print ("Line 6 - Value of c is ", c)
c //= a
print ("Line 7 - Value of c is ", c)
当你执行上面的程序，它会产生以下结果 -
Line 1 - Value of c is 31 Line 2 - Value of c is 52 Line 3 - Value of c is 1092 Line 4 - Value of c is 52.0 Line 5 - Value of c is 2 Line 6 - Value of c is 2097152 Line 7 - Value of c is 99864
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Python3变量类型
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Python3基本运算符