API change for collections in Python 3.3+ breaks is_atomic in options.py

[whudson]

API change for collections in Python 3.3+ breaks is_atomic in options.py

[foranastes]

As a temporary workaround, add these lines in your script.

import collections
collections.Iterable = collections.abc.Iterable

[whudson]

Sorry I'm getting myself confused here. Creating a layer with one argument works, but adding additional options fails at the is_atomic function. I'll try to send a PR for this later.

[whudson]

Apparently the correct way to do it is one of:

from collections.abc import *
from collections import abc

I'm not sure how the CI tests are passing on the existing build for v3.3+, but changing the import was definitely needed on my machine.

[timcoote]

This bug wasn't evident with Pyhton 3.9, but it is with 3.10.

[whudson]

I'm not sure how to fix this in a good way - I'll leave it up to someone else.