input和raw_input区别

pyhon2中的raw_input和python3中的input完全一样。

python2中的raw_input

cmz@leco:~/test$ ipython
Python 2.7.12 (default, Nov 20 2017, 18:23:56) 
Type "copyright", "credits" or "license" for more information.

IPython 2.4.1 -- An enhanced Interactive Python.
?         -> Introduction and overview of IPython's features.
%quickref -> Quick reference.
help      -> Python's own help system.
object?   -> Details about 'object', use 'object??' for extra details.

In [1]: a=raw_input('>> ')
>> 123

In [2]: type(a)
Out[2]: str

In [3]: a=raw_input('>> ')
>> [1,2,3]

In [4]: type(a)
Out[4]: str

In [5]: a=raw_input('>> ')
>> "123"

In [6]: type(a)
Out[6]: str

python3中input

Do you really want to exit ([y]/n)? 
cmz@leco:~/test$ ipython3
Python 3.5.2 (default, Nov 23 2017, 16:37:01) 
Type "copyright", "credits" or "license" for more information.

IPython 2.4.1 -- An enhanced Interactive Python.
?         -> Introduction and overview of IPython's features.
%quickref -> Quick reference.
help      -> Python's own help system.
object?   -> Details about 'object', use 'object??' for extra details.
In [1]: a=raw_input('>> ')
>> 123

In [2]: type(a)
Out[2]: str

In [3]: a=raw_input('>> ')
>> [1,2,3]

In [4]: type(a)
Out[4]: str

In [5]: a=raw_input('>> ')
>> "123"

In [6]: type(a)
Out[6]: str

从上可以看出不管输入什么python2和python3中都是str也就是字符串

python2的input和python3的input不一样

cmz@leco:~/test$ ipython
Python 2.7.12 (default, Nov 20 2017, 18:23:56) 
Type "copyright", "credits" or "license" for more information.

IPython 2.4.1 -- An enhanced Interactive Python.
?         -> Introduction and overview of IPython's features.
%quickref -> Quick reference.
help      -> Python's own help system.
object?   -> Details about 'object', use 'object??' for extra details.

In [1]: a=input('>> ')
>> 1

In [2]: type(a)
Out[2]: int

In [3]: a=input('>> ')
>> "123"

In [4]: type(a)
Out[4]: str

In [5]: a=input('>> ')
>> [1,2,3]

In [6]: type(a)
Out[6]: list

In [7]: type(a)
Out[7]: list

In [8]: a=input('>> ')
>> {1:3,3:4}

In [9]: type(a)
Out[9]: dict

从上可以看出，python2的input就是原生态的，你输入是什么就是什么，不转换。