After installing (ubuntu) python3.9, installing some packages with pip failes on:
Traceback (most recent call last):
File "<string>", line 1, in <module>
File "/usr/lib/python3/dist-packages/setuptools/__init__.py", line 14, in <module>
from setuptools.dist import Distribution, Feature
File "/usr/lib/python3/dist-packages/setuptools/dist.py", line 24, in <module>
from setuptools.depends import Require
File "/usr/lib/python3/dist-packages/setuptools/depends.py", line 7, in <module>
from .py33compat import Bytecode
File "/usr/lib/python3/dist-packages/setuptools/py33compat.py", line 54, in <module>
unescape = getattr(html, 'unescape', html_parser.HTMLParser().unescape)
AttributeError: 'HTMLParser' object has no attribute 'unescape'
----------------------------------------
ERROR: Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.
After some trial and error I upgraded, pip, distlib and setuptools and it solved it. Not sure which of those is causing it. (On the last two I found issues 1 2 of other sites) It is caused by removing unescape from HTMLParser in python3.9, which seems to break setuptools.
pip3 install --upgrade setuptools
If it does not work, try also:
pip3 install --upgrade pip
pip3 install --upgrade distlib
Note from @seb comment: The default pip3 may not be the python you are using. If so, try pip of your specific version used (e.g. pip3.9)
Edit: As suggested by @Pereira in the comments, Python 3.10+ users should just use `html.unescape` instead of the full form.