python里怎么查看数据类型

# 一个参数实例

>>> type(1)

<type 'int'>

>>> type('school')

<type 'str'>

>>> type([2])

<type 'list'>

>>> type({0:'zero'})

<type 'dict'>

>>> x = 1

>>> type( x ) == int # 判断类型是否相等

True

# 三个参数

>>> class X(object):

... a = 1

...

>>> X = type('X', (object,), dict(a=1)) # 产生一个新的类型 X

>>> X

<class '__main__.X'>

class A:

pass

class B(A):

pass

isinstance(A(), A) # returns True

type(A()) == A # returns True

isinstance(B(), A) # returns True

type(B()) == A # returns False