ImportError: cannot import name '_unicodefun' from 'click'

[enaskopelja]

Describe the bug
A recent version of click has been released which removes _unicodefun, breaking black (see also dask/distributed#6013).

To Reproduce

docker run --rm -it python:3.9-alpine sh

In the container:

pip install "click==8.1.0" "black==22.1.0"
black .

The resulting error is:

Traceback (most recent call last):
  File "/usr/local/bin/black", line 8, in <module>
    sys.exit(patched_main())
  File "/usr/local/lib/python3.9/site-packages/black/__init__.py", line 1423, in patched_main
    patch_click()
  File "/usr/local/lib/python3.9/site-packages/black/__init__.py", line 1409, in patch_click
    from click import _unicodefun
ImportError: cannot import name '_unicodefun' from 'click' (/usr/local/lib/python3.9/site-packages/click/__init__.py)

[zerocewl]

maybe pin click to the version before as first workaround? click==8.0.2

pip install --upgrade click==8.0.2

see also dask/distributed#6013

[Jackenmen]

This has been fixed by Black 22.3.0. Versions before that won't work with click 8.1.0.

[felix-hilden]

Correct, see issue #2964 for more info.