David Wilemski 4e990db32e Fix collections.abc DeprecationWarning ...

In versions of Python from 3.8 and forward, importing Mapping and
MutableMapping from the collections module will no longer work. This
change will try to import from the collections.abc module, which was
added in Python 3.3, and fall back to the collections module on older
versions of Python.

2019-01-01 15:23:51 -08:00

4.0 KiB

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