Click 사용법

예제

1. click_test1.py

import click

@click.command()
@click.argument('name')
def main(name):
    print(f'Hello {name}!')
    
if __name__ == '__main__':
    main()

---

2. click_test2.py

import click

@click.command()
@click.argument('name')
@click.option('--number', type=int)
def main(name, number):
    for i in range(number):
        print(f'Hello {name}!')
    
if __name__ == '__main__':
    main()

---

Help message도 자유롭게 작성가능

3. click_test3.py

import click

@click.command()
@click.argument('name')
@click.option('--number', type=int, help='Help message here')
def main(name, number):
    '''
    help message for user
    '''
    
    for i in range(number):
        print(f'Hello {name}!')
    
if __name__ == '__main__':
    main()

---

click.Choice

weather.py

import click

@click.command()
@click.option('--weather', type=click.Choice(['sunny', 'rainy', 'snowy']))
def main(weather):
    print(f'i love it when the weater is {weather}')
    pass

if __name__ == "__main__":
    main()

---

click.group

restaurant.py

import click

@click.group()
def cli():
    pass

@cli.group()
def lunch():
    pass

@cli.group()
def dinner():
    pass

@click.command()
def burger():
    print(f'Enjoy your burger!')

lunch.add_command(burger)
dinner.add_command(burger)

if __name__ == "__main__":
    cli()

• group 따로 사용하기

import click

@click.group()
def cli():
    pass

@cli.group()
def lunch():
    pass

@cli.group()
def dinner():
    pass

@lunch.command()
def burger():
    print(f'Enjoy your lunch burger!')

@dinner.command()
def burger():
    print(f'Enjoy your dinner burger!')
    
#@click.command()
#def burger():
#    print(f'Enjoy your burger!')
# lunch.add_command(burger)
# dinner.add_command(burger)

if __name__ == "__main__":
    cli()

%python

import sys
import click

@click.command()
@click.option('--count', default=1, help='Number of greetings.')
@click.option('--name', prompt='Your name',
            help='The person to greet.')
def hello(count, name):
    """Simple program that greets NAME for a total of COUNT times."""
    with open('echo.txt', 'w') as fobj:
        for x in range(count):
            click.echo('Hello %s!' % name)

if __name__ == '__main__':
    # first element is the script name, use empty string instead
    sys.argv = ['', '--name', 'Max', '--count', '3']
    hello()