python中算数运算符都有哪些
1个回答
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下表列出了所有Python语言支持的算术运算符。假设变量a持有10和变量b持有20,则:
运算符描述实例
+加法
-
对操作符的两侧加值a
+
b
=
30
-减法
-
从左侧操作数减去右侧操作数a
-
b
=
-10
*乘法-
相乘运算符两侧的值a
*
b=
200
/除
-
由右侧操作数除以左侧操作数b
/
a
=
2
%模
-
由右侧操作数和余返回除以左侧操作数b
%
=
0
**指数-
执行对操作指数(幂)的计算a**b
=
10
幂为
20
//地板除
-
操作数的除法,其中结果是将小数点后的位数被除去的商。9//2
=
4
而
9.0//2.0=
4.0
例子:
试试下面的例子就明白了所有的Python编程语言提供了算术运算符:
#!/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
当执行上面的程序,它会产生以下结果:
Line
1
-
Value
of
c
is
31
Line
2
-
Value
of
c
is
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
运算符描述实例
+加法
-
对操作符的两侧加值a
+
b
=
30
-减法
-
从左侧操作数减去右侧操作数a
-
b
=
-10
*乘法-
相乘运算符两侧的值a
*
b=
200
/除
-
由右侧操作数除以左侧操作数b
/
a
=
2
%模
-
由右侧操作数和余返回除以左侧操作数b
%
=
0
**指数-
执行对操作指数(幂)的计算a**b
=
10
幂为
20
//地板除
-
操作数的除法,其中结果是将小数点后的位数被除去的商。9//2
=
4
而
9.0//2.0=
4.0
例子:
试试下面的例子就明白了所有的Python编程语言提供了算术运算符:
#!/usr/bin/python
a
=
21
b
=
10
c
=
0
c
=
a
+
b
"Line
1
-
Value
of
c
is
",
c
c
=
a
-
b
"Line
2
-
Value
of
c
is
",
c
c
=
a
*
b
"Line
3
-
Value
of
c
is
",
c
c
=
a
/
b
"Line
4
-
Value
of
c
is
",
c
c
=
a
%
b
"Line
5
-
Value
of
c
is
",
c
a
=
2
b
=
3
c
=
a**b
"Line
6
-
Value
of
c
is
",
c
a
=
10
b
=
5
c
=
a//b
"Line
7
-
Value
of
c
is
",
c
当执行上面的程序,它会产生以下结果:
Line
1
-
Value
of
c
is
31
Line
2
-
Value
of
c
is
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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