Using or importing the ABCs from 'collections' instead of from 'collections.abc' is deprecated

[labrys]

It will stop working in Python 3.8.

[serhiy-storchaka]

This is a blocker for CPython: python/cpython#10596.

[tirkarthi]

Seems to be a duplicate of #402 ?

[labrys]

@tirkarthi Not a duplicate as the issue still exists after #402 was closed.
from collections import ... is still used in the following locations:

• html5lib._tokenizer
• html5lib.html5parser
• html5lib.filters.alphabeticalattributes
• html5lib.tests.test_alphabeticalattributes
• html5lib.treewalkers.etree

[tirkarthi]

The actual warning is about importing ABCs using from collections instead of collections.abc . OrderedDict and deque can still be imported from collections. from collections import ... is going away only for ABCs. The linked PR blocking CPython is about ABCs and a quick scan of the listed files tells me this is fixed in html5lib.

[labrys]

@tirkarthi you are correct... closing this