click python example

Hello folk need help
using python click module only
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[python]
import click

@click.group(chain=True)
def cli():
pass

@cli.command('name')
@click.argument('name1', nargs=-1)
@click.option('--firstname', is_flag=True)
@click.option('--lastname', is_flag=True)
def name(name1, firstname, lastname):

# import pdb; pdb.set_trace()
first, last = name1.split()
if firstname:
click.echo(first)
elif lastname:
click.echo(last)

if __name__ == '__main__':
cli()

[\python]
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expected output like
python foo.py name firstname lastname >> print firstname + lastname

python foo.py name firstname lastname --firstname >> it will print firstname

same for the lastname