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Create multiple sub commands with [Click]

Create multiple sub commands with [Click]

Description

I'd like to create the script that includes some options such as the awscli. We can create it easy to use the Click library. So, I write a sample code about creating sub-command with Click.

Premise

Python  : >= 3.7
Click   : >= 7.0

Code

import click

def main():
    cmd()

@click.group()
def cmd():
    """First layer sub-command group
    """
    pass

@cmd.group()
def sub_command_1():
    """Second layer sub-command group
    """
    pass

@cmd.group()
def sub_command_2():
    """Second layer sub-command group
    """
    pass

@sub_command_1.command()
def sub_command_1_1():
    print("Hello, subcommand 1 under the 1st layer subcommand 1")

@sub_command_1.command()
def sub_command_1_2():
    print("Hello, subcommand 2 under the 1st layer subcommand 1")

@sub_command_1.command()
def sub_command_1_3():
    print("Hello, subcommand 3 under the 1st layer subcommand 1")

@sub_command_2.command()
def sub_command_2_1():
    print("Hello, subcommand 1 under the 1st layer subcommand 2")

@sub_command_2.command()
def sub_command_2_2():
    print("Hello, subcommand 2 under the 1st layer subcommand 2")

if __name__ == "__main__":
    main()

Sample of executing result

  • Execute with no argument
(env) ~>python sample.py
Usage: sample.py [OPTIONS] COMMAND [ARGS]...

  First layer sub-command group

Options:
  --help  Show this message and exit.

Commands:
  sub-command-1  Second layer sub-command group
  sub-command-2  Second layer sub-command group
  • Execute with 1st argument
(env) ~>python sample.py sub-command-2
Usage: sample.py sub-command-2 [OPTIONS] COMMAND [ARGS]...

  Second layer sub-command group

Options:
  --help  Show this message and exit.

Commands:
  sub-command-2-1
  sub-command-2-2
  • Execute with until 2nd argument
(env) ~>python sample.py sub-command-2 sub-command-2-1
Hello, subcommand 1 under the 1st layer subcommand 2
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