DeprecationWarning: Using or importing the ABCs from 'collections' instead of from 'collections.abc'

用python实现import语句时，出现了以下问题：

from collections import Iterable

Warning (from warnings module):
  File "__main__", line 1
DeprecationWarning: Using or importing the ABCs from 'collections' instead of from 'collections.abc' is deprecated, and in 3.8 it will stop working

是因为版本更新发出的警告。目前可以忽略，不影响后续使用。