Question

我有一个Python程序，我想使用命令运行它：

myprogram --readpower=some argument

代码

import click
import csv
import json
import sys

@click.group(invoke_without_command=True)   
@click.option('--version', is_flag=True, default=False, help='Prints out pyisg package version being used')
def cli(version):
    """
    This utility is used to convert a CSV file to JSON file
    """
    if version:
        print("This is version 1.0 software")
        sys.exit()

@cli.command()
@click.option('--readpower', type=str, default="",
              help='Path of the csv file which is to be read)')

def read_csv(readpower,readspike,readdip):
{
    if readpower: 
        print("reading power")
}

if __name__ == "__main__":
    cli()

我面临的问题是命令 -

myprogram --readpower = some argument

不起作用。我必须将命令编写为：

myprogram read_csv --readpower = some argument

Answer 1

因为你不想要它，所以摆脱这个群体。直接使用命令：

代码：

import click
import sys

@click.command()
@click.option('--version', is_flag=True, default=False,
              help='Prints out pyisg package version being used')
@click.option('--readpower', type=str, default="",
              help='Path of the csv file which is to be read)')
def cli(version, readpower):
    """
    This utility is used to convert a CSV file to JSON file
    """
    if version:
        click.echo("This is version 1.0 software")
        sys.exit()

    if readpower != '':
        click.echo("reading power {}".format(readpower))

测试代码：

if __name__ == "__main__":
    cli('--readpower=3'.split())
    cli('--version'.split())

Answer 2

Click实际上正在做它应该做的事情。您创建了一个组cli并添加了单个命令read_csv。因此，click需要知道命令以了解要调用的内容，因为可能存在更多甚至嵌套的命令。您可以创建一个独立的单击命令read_csv并将其注册到setup.py文件中，如下所示：

# app.py
import click

# as a standalone command
@click.command()
@click.option('--readpower', type=str, default="")
def read_csv(readpower):
    click.echo("doing stuff...")
    if readpower:
        click.echo("reading {}...".format(readpower))

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

@cli.command()
def do_stuff():
    click.echo("doing stuff...")

# as a subcommand in a group
@cli.command()
@click.option('--readpower', type=str, default="")
def read_csv(readpower):
    click.echo("doing something...")
    if readpower:
        click.echo("reading {}...".format(readpower))

设置：

# setup.py
from setuptools import setup

setup(
    name='app',
    version='0.1',
    py_modules=['app'],
    install_requires=['Click'],
    entry_points='''
        [console_scripts]
        read_csv=app:read_csv
        cli=app:cli
    ''',
)

因此，您可以为应用程序设置多个入口点，并将多个独立命令与分组（甚至可能嵌套）命令混合使用。

在Python中使用Click命令

代码

2 个答案:

代码：

测试代码：