Fix "from collections import Mapping, MutableMapping" with Python 3.8. #511
Description
This relates directly to #489 which has unfortunately not been updated by the original contributor.
The takeaway is that for Python 3.8 not breaking our imports we need to change a few imports from:
from collections import Mapping, MutableMappingto:
from collections.abc import Mapping, MutableMappingSo I'm suggesting we use the following import scheme:
import sys
if sys.version_info[:2] >= (3, 8): # pragma: no cover
from collections.abc import Mapping, MutableMapping
else: # pragma: no cover
from collections import Mapping, MutableMappingThese are the imports I noted that would need change when I looked at it a few weeks ago:
/colour-science/colour/colour/algebra
interpolation.py
from collections import OrderedDict, Mapping
/colour-science/colour/colour/continuous
multi_signals.py
from collections import Iterator, Mapping, OrderedDict, Sequence
signal.py
from collections import Iterator, Mapping, OrderedDict, Sequence
/colour-science/colour/colour/plotting
models.py
from collections import Mapping
/colour-science/colour/colour/utilities
array.py
from collections import Mapping
data_structures.py
from collections import Mapping, MutableMappingWe cannot really check if the code works on 3.8 as we don't build against it but I'm assuming this should work.