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 |
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:
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
|
|