python入门001

 

001、print的用法

输出字符串：

>>> print("hello world!")
hello world!
>>> print(3243)
3243
>>> print("对方是否的")
对方是否的

 

 

002、数值运算

>>> 10 + 50
60
>>> 50  - 3
47
>>> 30 + 30 - 100
-40
>>> 3 * 8
24
>>> 3 * 8 + 10
34
>>> 8 / 2
4.0
>>> 8 / 2 + 8
12.0

 

 

003、变量

>>> a = 10000
>>> a
10000
>>> b = 500
>>> a + b
10500
>>> b / 2
250.0
>>> a % b
0
>>> a  = "hello world!"
>>> a
'hello world!'
>>> print(a)
hello world!
>>> b = "dsfdsgdgfdg"
>>> b
'dsfdsgdgfdg'