
input只能输入数字
raw_input 既可以输入数字也可以输入字符串
>>> input("input you name:")
input you name:carrie
Traceback (most recent call last):
File "<stdin>", line , in <module>
File "<string>", line , in <module>
NameError: name 'carrie' is not defined >>> input("input you name:")
input you name: >>> raw_input("input you name:")
input you name:carrie
'carrie'
>>> raw_input("input you name:")
input you name:
''