Python - 从 json 文件加载项目描述

最近我看到一篇帖子，说有人制作了一个可以控制电脑的程序.(就是这个)Add commands to user input

在看了一些教程之后，我能够收发邮箱，并开始使用一些命令.首先，我添加了截图功能，这是最重要的功能.然后我添加了函数和命令来做其他事情.然后我想添加一个help命令，如果没有args，则显示所有命令，如果有args，则显示特定命令的描述.我首先添加了一个没有args的，下面是代码:

import json

user_input = "$say hello\n$help"
def help(*args):
    if args == ():
        for func_name, aliases in info_json.items():
            print(func_name)
    else:
        pass
        #print the description for the command

def command1():
    print("I am command 1.")
def command2():
    print("I am command 2.")
def command3():
    print("I am command 3.")
def say(*args):
    print(f"You said i should say \"{' '.join(args)}\"! Very cool :D")
def pause(sec):
    print(f"I waited for {sec} seconds!")

commands = {
    "$help":help,
    "$pause":pause,
    "$say":say,
    "$command1":command1,
    "$command2":command2,
    "$command3":command3,
}
with open("commands.json") as json_file:
    help_json = json.load(json_file)


def call_command(BEFEHL):
    function, *args = BEFEHL.split(' ')
    commands[function](*args)


for line in user_input.split("\n"):
    try:
        call_command(line)
    except KeyError:
        print("This command does not exist.")

我用打印语句替换了实际函数，就像最初的作者那样:D

这段代码运行得很好，我开始对特定函数进行描述.我创建了commands.json个示例:

{
  "command1": ["This command is command 1. It prints out 'I am command 1' "],
  "command2": ["This command is command 2. It prints out 'I am command 2' "],
  "command3": ["This command is command 3. It prints out 'I am command 3' "]
}

有什么方法可以打印出命令背后的json中的内容吗？例如:

>>> $help command1
print("This is command 1. It prints out 'I am command 1' ")

我很想知道这是否可行！:D