无法导入freegames python包：AttributeError：模块'collections'没有属性'Sequence'

Question

Python version : 3.10

I was trying to install the freegames python package using the following pip command

C:\Users\praty>pip install freegames
Defaulting to user installation because normal site-packages is not writeable
Collecting freegames
  Downloading freegames-2.3.2-py2.py3-none-any.whl (108 kB)
     |████████████████████████████████| 108 kB 504 kB/s
Installing collected packages: freegames
Successfully installed freegames-2.3.2

But while importing the same on my python environment I was getting this error

C:\Users\praty>python
Python 3.10.0 (tags/v3.10.0:b494f59, Oct  4 2021, 19:00:18) [MSC v.1929 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import freegames
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "C:\Users\praty\AppData\Roaming\Python\Python310\site-packages\freegames\_init_.py", line 61, in <module>
    from .utils import floor, line, path, square, vector
  File "C:\Users\praty\AppData\Roaming\Python\Python310\site-packages\freegames\utils.py", line 77, in <module>
    class vector(collections.Sequence):
AttributeError: module 'collections' has no attribute 'Sequence'

How do I resolve the same?

Answer 1

For quite some time Sequence was importable from collections :

$ python2.7 -c "from collections import Sequence"
$ python3.4 -c "from collections import Sequence"
$ python3.5 -c "from collections import Sequence"
$ python3.6 -c "from collections import Sequence"

Starting from Python 3.7 there was a warning the class has been moved to collections.abc :

$ python3.7 -c "from collections import Sequence"
-c:1: DeprecationWarning: Using or importing the ABCs from 'collections' instead of from 'collections.abc' is deprecated since Python 3.3,and in 3.9 it will stop working
$ python3.8 -c "from collections import Sequence"
<string>:1: DeprecationWarning: Using or importing the ABCs from 'collections' instead of from 'collections.abc' is deprecated since Python 3.3, and in 3.10 it will stop working
$ python3.9 -c "from collections import Sequence"
<string>:1: DeprecationWarning: Using or importing the ABCs from 'collections' instead of from 'collections.abc' is deprecated since Python 3.3, and in 3.10 it will stop working

In Python 3.10 this became an error:

$ python3.10 -c "from collections import Sequence"
Traceback (most recent call last):
  File "<string>", line 1, in <module>
ImportError: cannot import name 'Sequence' from 'collections' (/home/phd/.local/lib/python3.10/collections/__init__.py)
$ python3.10 -c "from collections.abc import Sequence"

Report the problem to the author of freegames . Downgrade to Python 3.9. Learn that you should never be so fast to upgrade to the latest and greatest versions.