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Import of collections.Hashable fails in Python 3.10 #79

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@PTriebold

Description

@PTriebold

System information

  • OS Platform and Distribution (e.g., Linux Ubuntu 16.04): macOS 12.6
  • Python version: 3.10.7
  • NumPy version: 1.23.3

Describe the current behavior
import of numpy_ml fails due to an ImportError with the collections module.

Describe the expected behavior
Importing just the module should not generate an ImportError

Code to reproduce the issue

# Python 3.10 or newer
import numpy_ml

Other info / logs
In Python 3.10 the deprecated aliases were removed.

Remove deprecated aliases to Collections Abstract Base Classes from the collections module. (Contributed by Victor Stinner in bpo-37324.)

from What’s New In Python 3.10

fix
To fix the bug, in /numpy_ml/utils/data_structures.py change

from collections import Hashable

to

from collections.abc import Hashable

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