Is it possible to reuse python @click.option decorators for multiple commands?

问题

I have two Python CLI tools which share a set of common click.options. At the moment, the common options are duplicated:

@click.command()
@click.option('--foo', is_flag=True)
@click.option('--bar', is_flag=True)
@click.option('--unique-flag-1', is_flag=True)
def command_one():
    pass

@click.command()
@click.option('--foo', is_flag=True)
@click.option('--bar', is_flag=True)
@click.option('--unique-flag-2', is_flag=True)
def command_two():
    pass

Is it possible to extract the common options in to a single decorator that can be applied to each function?

回答1:

You can build your own decorator that encapsulates the common options:

def common_options(function):
    function = click.option('--unique-flag-1', is_flag=True)(function)
    function = click.option('--bar', is_flag=True)(function)
    function = click.option('--foo', is_flag=True)(function)
    return function

@click.command()
@common_options
def command():
    pass

来源：https://stackoverflow.com/questions/50061342/is-it-possible-to-reuse-python-click-option-decorators-for-multiple-commands