Add Commands

Add the add, list, and done commands. Replace this with your step instructions.

Instructions

Read the subcommand from sys.argv
Implement add, list, and done
Store todos in a JSON file

Dispatch the subcommand

main reads the subcommand from sys.argv[1] and passes the remaining arguments on. The add_todo, list_todos, and mark_done functions live in a separate todo.py file that you write in this step.

import sys
from todo import add_todo, list_todos, mark_done
def main():
    if len(sys.argv) < 2:
        sys.exit("usage: todo <add|list|done> [args]")
    match sys.argv[1]:
        case "add":
            add_todo(sys.argv[2:])
        case "list":
            list_todos()
        case "done":
            mark_done(sys.argv[2:])
        case other:
            sys.exit(f"unknown command: {other}")
if __name__ == "__main__":
    main()