How do you let a Flask CLI command accept an argument?
Flask seems to customise the Click Group object, so this doesn't work:
@app.cli.command()
@app.cli.argument('email')
def user_info(email):
...
@app.cli.command is only to tell the click about this user_info. If you want the arguments and other click functionality please use click as well.
@app.cli.command()
@click.option('--email')
def user_info(email):
...