I have tried installing it with
yay -S dataclass _wizard (and dataclass-wizard) - no package found
“python3 -mpip install --user dataclass-wizard”
Message
This environment is externally managed
╰─> To install Python packages system-wide, try 'pacman -S
python-xyz', where xyz is the package you are trying to
install.
If you wish to install a non-Arch-packaged Python package,
create a virtual environment using 'python -m venv path/to/venv'.
Then use path/to/venv/bin/python and path/to/venv/bin/pip.
If you wish to install a non-Arch packaged Python application,
it may be easiest to use 'pipx install xyz', which will manage a
virtual environment for you. Make sure you have python-pipx
installed via pacman.
sudo pacman -S python-dataclass-wizard - target not found (when I typed python the rest of the name was suggested by the Konsole)
Moderator edit: In the future, please use proper formatting: [HowTo] Post command output and file content as formatted text