python3下的input函数怎么用

>>> x = input()

4.5

>>> type(x)

<class 'str'>

>>> y = input()

Do you love python?

>>> type(y)

<class 'str'>

>>> x = input()

abc

>>> x * 3

'abcabcabc'

>>> y = input()

123

>>> x + y

'abc123'

>>> x = input()

5

>>> x + 5

Traceback (most recent call last):

  File "<stdin>", line 1, in <module>

TypeError: must be str, not int

>>> x * 5

'55555'

>>> y = input()

6

>>> x * y

Traceback (most recent call last):

  File "<stdin>", line 1, in <module>

TypeError: can't multiply sequence by non-int of type 'str'

1 >>> y = int(input())

2 10

3 >>> type(y)

4 <class 'int'>

eval(expression, globals[ ], locals[ ])

1  >>> y = eval(input())

2  4.5

3  >>> type(y)

4 <class 'float'>

str.split(str="", num=string.count(str))