ImportError: cannot import name 'ParameterSource' from 'click.core'

I'm working on simple flask app, and I received this error

 from click.core import ParameterSource ImportError: cannot import name 'ParameterSource' from 'click.core' (/usr/local/lib/python3.10/dist-packages/click/core.py) 

I don't know why it's appearing, because everything was fine and then just...

Here are versions I use:

black 23.1.0 click 8.1.3 Flask 2.2.3 Python 3.10.6 pip 22.0.2 

I've been searching for solution and found that many people can't deal with this problem, and the only advice I found, is that I have to update Click and black to the latest version, but I'm already using the latest version.

What should I do? I there any any way to not use Click at all?

UPDATE

Here is how full error looks like

Traceback (most recent call last): File "/usr/lib/python3.10/runpy.py", line 187, in _run_module_as_main mod_name, mod_spec, code = _get_module_details(mod_name, _Error) File "/usr/lib/python3.10/runpy.py", line 146, in _get_module_details return _get_module_details(pkg_main_name, error) File "/usr/lib/python3.10/runpy.py", line 110, in _get_module_details __import__(pkg_name) File "/home/diametr/.local/lib/python3.10/site-packages/flask/__init__.py", line 5, in <module> from .app import Flask as Flask File "/home/diametr/.local/lib/python3.10/site-packages/flask/app.py", line 34, in <module> from . import cli File "/home/diametr/.local/lib/python3.10/site-packages/flask/cli.py", line 15, in <module> from click.core import ParameterSource ImportError: cannot import name 'ParameterSource' from 'click.core' (/usr/local/lib/python3.10/dist-packages/click/core.py) 

5 Answers

Please try the following steps:

 pip uninstall black pip uninstall click pip install black pip install click 

You can soft reboot your server. Use

sudo reboot 

Created another environment and launched my notebook there, I was able to resolve it this way.

Please try the following steps:

sudo apt purge python3-click pip install click 

I met the problem as the same. But when I changed the current working directory the problem disapper. Perhasp the click call the PWD as the first calling routine.