Help with click

[snippsat]

Thanks for your reply. But how are param and value passed to the callback function print_version?

It's explained here.

Not familiar with click, but as it says, try adding param to the callback signature.

It's pretty impressive,it blows other command line parser out the window :whistle:
Just the fact that click.echo(''),
has full Unicode support and you will get correct output in all OS(also in Windows cmd where Unicode always has been wrong).