如何处理子群帮助信息
How to handle sub-group help message
我想了解有关 Click 的一些实现细节。我有以下示例代码:
#cli.py
import click
@click.group()
def cli():
pass
@cli.group()
def show():
""" Define the environment of the product """
pass
@show.command()
def name():
click.echo("run show name command")
@show.command()
def height():
click.echo("run show height command")
if __name__ == "__main__":
cli()
使用此代码,name
和 height
是 [=15= 的子命令 ] 团体。但是,从语义上讲,这并没有真正意义。它们更像是 'show' 命令的 arguments。
我知道我可以有一个带有 "attribute" 参数的命令,我可以从中根据 "attribute." 的字符串值调用不同的函数但是,我觉得维护一次会很乏味"attribute."
有几种可能
如果我能够编辑帮助信息,我相信我仍然可以使用上面的结构。当我 运行 cli.py show --help
时,我得到命令组的默认帮助消息:
Usage: cli.py show [OPTIONS] COMMAND [ARGS]...
Define the environment of the product
Options:
--help Show this message and exit.
Commands:
height
name
有没有办法编辑帮助消息以将 "Commands" 更改为 "Arguments"?我知道如何更改 click.group() 装饰器中的用法语句,但我不确定如何修改帮助消息本身。
我想实现的帮助信息如下:
Usage: cli.py show [OPTIONS] ARG
Define the environment of the product
Options:
--help Show this message and exit.
Arguments:
height
name
这样的事情可能吗?
我正在使用 python3 和 Click 6.7
您可以通过为组使用自定义 class 来更改子命令帮助给出的消息。自定义 class 可以通过继承 click.Group
并更改 format_commands()
方法来实现,例如:
自定义 Class:
class HelpAsArgs(click.Group):
# change the section head of sub commands to "Arguments"
def format_commands(self, ctx, formatter):
rows = []
for subcommand in self.list_commands(ctx):
cmd = self.get_command(ctx, subcommand)
if cmd is None:
continue
help = cmd.short_help or ''
rows.append((subcommand, help))
if rows:
with formatter.section('Arguments'):
formatter.write_dl(rows)
测试代码:
import click
@click.group()
def cli():
pass
@cli.group(cls=HelpAsArgs)
def show():
""" Define the environment of the product """
pass
@show.command()
def name():
click.echo("run show name command")
@show.command()
def height():
click.echo("run show height command")
if __name__ == "__main__":
commands = (
'show',
'show --help',
'--help',
)
import sys, time
time.sleep(1)
print('Click Version: {}'.format(click.__version__))
print('Python Version: {}'.format(sys.version))
for command in commands:
try:
time.sleep(0.1)
print('-----------')
print('> ' + command)
time.sleep(0.1)
cli(command.split())
except BaseException as exc:
if str(exc) != '0' and \
not isinstance(exc, (click.ClickException, SystemExit)):
raise
结果:
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)]
-----------
> show
Usage: test.py show [OPTIONS] COMMAND [ARGS]...
Define the environment of the product
Options:
--help Show this message and exit.
Arguments:
height
name
-----------
> show --help
Usage: test.py show [OPTIONS] COMMAND [ARGS]...
Define the environment of the product
Options:
--help Show this message and exit.
Arguments:
height
name
-----------
> --help
Usage: test.py [OPTIONS] COMMAND [ARGS]...
Options:
--help Show this message and exit.
Commands:
show Define the environment of the product
我想了解有关 Click 的一些实现细节。我有以下示例代码:
#cli.py
import click
@click.group()
def cli():
pass
@cli.group()
def show():
""" Define the environment of the product """
pass
@show.command()
def name():
click.echo("run show name command")
@show.command()
def height():
click.echo("run show height command")
if __name__ == "__main__":
cli()
使用此代码,name
和 height
是 [=15= 的子命令 ] 团体。但是,从语义上讲,这并没有真正意义。它们更像是 'show' 命令的 arguments。
我知道我可以有一个带有 "attribute" 参数的命令,我可以从中根据 "attribute." 的字符串值调用不同的函数但是,我觉得维护一次会很乏味"attribute."
有几种可能如果我能够编辑帮助信息,我相信我仍然可以使用上面的结构。当我 运行 cli.py show --help
时,我得到命令组的默认帮助消息:
Usage: cli.py show [OPTIONS] COMMAND [ARGS]...
Define the environment of the product
Options:
--help Show this message and exit.
Commands:
height
name
有没有办法编辑帮助消息以将 "Commands" 更改为 "Arguments"?我知道如何更改 click.group() 装饰器中的用法语句,但我不确定如何修改帮助消息本身。
我想实现的帮助信息如下:
Usage: cli.py show [OPTIONS] ARG
Define the environment of the product
Options:
--help Show this message and exit.
Arguments:
height
name
这样的事情可能吗?
我正在使用 python3 和 Click 6.7
您可以通过为组使用自定义 class 来更改子命令帮助给出的消息。自定义 class 可以通过继承 click.Group
并更改 format_commands()
方法来实现,例如:
自定义 Class:
class HelpAsArgs(click.Group):
# change the section head of sub commands to "Arguments"
def format_commands(self, ctx, formatter):
rows = []
for subcommand in self.list_commands(ctx):
cmd = self.get_command(ctx, subcommand)
if cmd is None:
continue
help = cmd.short_help or ''
rows.append((subcommand, help))
if rows:
with formatter.section('Arguments'):
formatter.write_dl(rows)
测试代码:
import click
@click.group()
def cli():
pass
@cli.group(cls=HelpAsArgs)
def show():
""" Define the environment of the product """
pass
@show.command()
def name():
click.echo("run show name command")
@show.command()
def height():
click.echo("run show height command")
if __name__ == "__main__":
commands = (
'show',
'show --help',
'--help',
)
import sys, time
time.sleep(1)
print('Click Version: {}'.format(click.__version__))
print('Python Version: {}'.format(sys.version))
for command in commands:
try:
time.sleep(0.1)
print('-----------')
print('> ' + command)
time.sleep(0.1)
cli(command.split())
except BaseException as exc:
if str(exc) != '0' and \
not isinstance(exc, (click.ClickException, SystemExit)):
raise
结果:
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)]
-----------
> show
Usage: test.py show [OPTIONS] COMMAND [ARGS]...
Define the environment of the product
Options:
--help Show this message and exit.
Arguments:
height
name
-----------
> show --help
Usage: test.py show [OPTIONS] COMMAND [ARGS]...
Define the environment of the product
Options:
--help Show this message and exit.
Arguments:
height
name
-----------
> --help
Usage: test.py [OPTIONS] COMMAND [ARGS]...
Options:
--help Show this message and exit.
Commands:
show Define the environment of the product