Bug#917603: python3-yaml: DeprecationWarning: Using or importing the ABCs from 'collections' instead of from 'collections.abc' is deprecated, and in 3.8 it will stop working

Sat, 29 Dec 2018 03:48:30 -0800 

On Sat, 29 Dec 2018 at 05:40:43 +0100, Niels Thykier wrote:
> tests/test_autopkgtest.py::T::test_alternative_gcc
>   /usr/lib/python3/dist-packages/yaml/constructor.py:126: DeprecationWarning: 
> Using or importing the ABCs from 'collections' instead of from 
> 'collections.abc' is deprecated, and in 3.8 it will stop working
>     if not isinstance(key, collections.Hashable):

Minimal reproducer:

    python3.7 -Werror -c 'import yaml; yaml.load("{1: 2}")'

To verify the fix in an unpacked/patched source tree:

    PYTHONPATH=$(pwd)/lib3 python3.7 -Werror -c 'import yaml; yaml.load("{1: 
2}")'

Thanks for tracking down the patch. game-data-packager is also affected.
I've pushed the patched version to the git repository and I'll upload soon.

    smcv

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