python Using or importing the ABCs from ‘collections‘ instead of from ‘collections.abc‘ is deprecate

最新推荐文章于 2024-08-09 18:04:45 发布

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本文介绍了解决Python 3.3及以上版本中关于从'collections'导入ABCs的DeprecationWarning，指导读者如何修正代码以避免未来兼容问题。

python 导包警告 Using or importing the ABCs from ‘collections’ instead of from ‘collections.abc’ is deprecated since Python 3.3, and in 3.10 it will stop working

代码如下（示例）：

from collections import Iterator

print(isinstance(iter([]), Iterator))  # True

# 控制台输出：
# D:\Code_data\pycharm project\first test\08-iterable.py:2: DeprecationWarning: Using or importing the ABCs from 'collections' instead of from 'collections.abc' is deprecated since Python 3.3, and in 3.10 it will stop working
#   from collections import Iterator
# True

虽然结果出来了，但是一直有个烦人的警告（Using or importing the ABCs from ‘collections’ instead of from ‘collections.abc’ is deprecated since Python 3.3, and in 3.10 it will stop working），不仔细看，还以为代码哪里报错了
解决办法就是将
from collections import Iterator
改为
from collections.abc import Iterator