Python3中倒入collections错误

 下面的这段代码在执行时出现了错误，

from collections import Iterable
from collections import Iterator

print(isinstance([], Iterator))
print(isinstance([], Iterable))

DeprecationWarning: Using or importing the ABCs from 'collections' instead of from 'collections.abc' is deprecated, and in 3.8 it will stop working
  from collections import Iterable

从错误的描述中可以看出是导入的错误，因此，需要改变导入的方式。改变方式如下：

from collections.abc import Iterable
from collections.abc import Iterator

print(isinstance([], Iterator))
print(isinstance([], Iterable))