我试图做一个详细的标志我的Python程序。目前,我这样做:
import click
#global variable
verboseFlag = False
#parse arguments
@click.command()
@click.option('--verbose', '-v', is_flag=True, help="Print more output.")
def log(verbose):
global verboseFlag
verboseFlag = True
def main():
log()
if verboseFlag:
print("Verbose on!")
if __name__ == "__main__":
main()
它永远不会打印“上放牧!”甚至当我设置的“-v”的说法。我的想法是,对数函数需要一个参数,但我该怎么给呢?此外,有没有办法检查冗余标志是否是没有全局变量?
所以点击是不是一个简单的命令行分析器。它还调度和处理的命令。因此,在您的例子中,log()
函数永远不会返回到main()
。该框架的意图是装饰功能,即:log()
,将做必要的工作。
import click
@click.command()
@click.option('--verbose', '-v', is_flag=True, help="Print more output.")
def log(verbose):
click.echo("Verbose {}!".format('on' if verbose else 'off'))
def main(*args):
log(*args)
if __name__ == "__main__":
commands = (
'--verbose',
'-v',
'',
'--help',
)
import sys, time
time.sleep(1)
print('Click Version: {}'.format(click.__version__))
print('Python Version: {}'.format(sys.version))
for cmd in commands:
try:
time.sleep(0.1)
print('-----------')
print('> ' + cmd)
time.sleep(0.1)
main(cmd.split())
except BaseException as exc:
if str(exc) != '0' and \
not isinstance(exc, (click.ClickException, SystemExit)):
raise
Click Version: 6.7
Python Version: 3.6.3 (v3.6.3:2c5fed8, Oct 3 2017, 18:11:49) [MSC v.1900 64 bit (AMD64)]
-----------
> --verbose
Verbose on!
-----------
> -v
Verbose on!
-----------
>
Verbose off!
-----------
> --help
Usage: test.py [OPTIONS]
Options:
-v, --verbose Print more output.
--help Show this message and exit.
以上答案是有帮助的,但是这是我最终使用。我想,既然这么多人都在看这个问题,我会分享:
@click.command()
@click.option('--verbose', '-v', is_flag=True, help="Print more output.")
def main(verbose):
if verbose:
# do something
if __name__ == "__main__":
# pylint: disable=no-value-for-parameter
main()