Python输入输出

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1        第一个Python[iyunv@daidai python]# cat calc.py
print(100+200+300)
[iyunv@daidai python]# python calc.py
600

[iyunv@daidai python]# cat hello.py
print('hello,world')
[iyunv@daidai python]# python hello.py
hello,world

[iyunv@daidai python]# cat hello.py
#!/usr/bin/python
print('hello,world')
[iyunv@daidai python]# chmod +x hello.py
[iyunv@daidai python]# ./hello.py
hello,world
1.1   输出>>> print('hello,world')
hello,world
>>> print('hello,','world')
hello, world
print()会依次打印每个字符串，遇到逗号“,”会输出一个空格
>>> print('100+200=',100+200)
100+200= 300
1.2   输入>>> name=input()
daidai
>>> name
'daidai'
>>> print(name)
daidai
>>> print('hello,',name)
hello, daidai
>>> name=input('Pleaseinput your name: ')  --input函数允许用户输入提示信息
Please input your name: daidai
>>> print('hello,',name)
hello, daidai
>>> name
'daidai'