I was wanting to upgrade my python version (to 3.10 in this case) so after installing python3.10 I proceeded to try adding some modules I use e.g. opencv , which ran into: jeremy@jeremy-Blade:~$ python3.10 -m pip install opencv-python Traceback (most recent call last): File "/usr/lib/python3.10/runpy.py", line 196, in _run_module_as_main return _run_code(code, main_globals, None, File "/usr/lib/python3.10/runpy.py", line 86, in _run_code exec(code, run_globals) File "/usr/lib/python3/dist-packages/pip/__main__.py", line 16, in <module> from pip._internal.cli.main import main as _main # isort:skip # noqa File "/usr/lib/python3/dist-packages/pip/_internal/cli/main.py", line 10, in <module> from pip._internal.cli.autocompletion import autocomplete File "/usr/lib/python3/dist-packages/pip/_internal/cli/autocompletion.py", line 9, in <module> from pip._internal.cli.main_parser import create_main_parser File "/usr/lib/python3/dist-packages/pip/_internal/cli/main_parser.py", line 7, in <module> from pip._internal.cli import cmdoptions File "/usr/lib/python3/dist-packages/pip/_internal/cli/cmdoptions.py", line 19, in <module> from distutils.util import strtobool ModuleNotFoundError: No module named 'distutils.util' jeremy@jeremy-Blade:~$ sudo apt-get install python3-distutils [sudo] password for jeremy: Reading package lists... Done Building dependency tree Reading state information... Done python3-distutils is already the newest version (3.8.10-0ubuntu1~20.04). ... 0 upgraded, 0 newly installed, 0 to remove and 4 not upgraded. Since distutils already seems to be installed , I can't grok how to proceed. Continue reading...