降级到版本 18 后 Pip 不工作

Question

I downgraded Pip from the most recent version using sudo python -m pip install pip==18.0 --upgrade , and now I am receiving the following error when running pip/pip3, including when trying to re-upgrade it using pip3 install --upgrade pip

Traceback (most recent call last):
File "/usr/local/bin/pip3", line 5, in \<module\>
from pip.\_internal import main
File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/pip/\_internal/__init__.py", line 42, in \<module\>
from pip.\_internal import cmdoptions
File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/pip/\_internal/cmdoptions.py", line 16, in \<module\>
from pip.\_internal.index import (
File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/pip/\_internal/index.py", line 14, in \<module\>
from pip.\_vendor import html5lib, requests, six
File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/pip/\_vendor/html5lib/__init__.py", line 25, in \<module\>
from .html5parser import HTMLParser, parse, parseFragment
File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/pip/\_vendor/html5lib/html5parser.py", line 8, in \<module\>
from . import \_tokenizer
File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/pip/\_vendor/html5lib/\_tokenizer.py", line 16, in \<module\>
from .\_trie import Trie
File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/pip/\_vendor/html5lib/\_trie/__init__.py", line 3, in \<module\>
from .py import Trie as PyTrie
File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/pip/\_vendor/html5lib/\_trie/py.py", line 6, in \<module\>
from .\_base import Trie as ABCTrie
File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/pip/\_vendor/html5lib/\_trie/\_base.py", line 3, in \<module\>
from collections import Mapping
ImportError: cannot import name 'Mapping' from 'collections' (/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/collections/__init__.py)

Answer 1

Not sure if there's a specific reason you installed pip 18.0 as it looks incompatible with Python 3.10. It looks like in Python 3.10 collections.Mapping moved to collections.abc.Mapping . I would suggest just completely uninstalling pip and reinstalling, without using pip to do so.

In general, you should try to use the latest version of pip.