pytest警告DeprecationWarning: Using or importing the ABCs from 'collections' instead of from 'collections.abc' is deprecated since Python 3.3,and in 3.9 it will stop working

问题现象

=========================================================================================== warnings summary =========================================================================================== 
f:\python3.7\lib\site-packages\urllib3\util\selectors.py:14
  f:\python3.7\lib\site-packages\urllib3\util\selectors.py:14: DeprecationWarning: Using or importing the ABCs from 'collections' instead of from 'collections.abc' is deprecated since Python 3.3,and in 3.9 it will stop working
    from collections import namedtuple, Mapping

f:\python3.7\lib\site-packages\urllib3\_collections.py:2
  f:\python3.7\lib\site-packages\urllib3\_collections.py:2: DeprecationWarning: Using or importing the ABCs from 'collections' instead of from 'collections.abc' is deprecated since Python 3.3,and in 3.9 it will stop working
    from collections import Mapping, MutableMapping

问题分析

大致意思是：弃用警告：从collections中导入ABCs已被弃用，并在python3.8中将停止工作，可使用collections.abc代替它进行使用
然后就各种百度了解，主要看到两种解决办法，做一下简单汇总：
第一种：在代码文件中用到了 collections 这个模块的报错；
第二种：在代码文件中没有用到 collections 这个模块的报错；

解决方法

如果有使用这个方法

# from collections import Iterable   ---这是会报警告的用法
from collections.abc import Iterable ---这是不会报警告的用法

如果根本没用调用这个方法
那么只能通过pytest的告警过滤了
创建pytest.ini文件，写入下面内容并保存

[pytest]
addopts = -p no:warnings

运行后，告警消除
pytest警告DeprecationWarning: Using or importing the ABCs from 'collections' instead of from 'collections.abc' is deprecated since Python 3.3,and in 3.9 it will stop working