main

import os
from cd import cd, path
from ls import *

while True:
    cmd = input("$ ")

    if 'cd' in cmd:
        cmd_c0 = cmd.strip('cd ')
        path = cd(cmd_c0)
    if cmd.startswith('ls'):
        # cmd_path = cmd.strip('ls ')
        
        args, cmd_path = get_arg(cmd)
        if args:
            if cmd_path == '':
                ls_path = path
            else:
                ls_path = cmd_path

            # print(cmd_path)
            for arg in args:
                if arg == '-d':
                    d_(ls_path)
                if arg == '-l':
                    l_(ls_path)
        else:
            if cmd_path:
                dir_dic = os.listdir(cmd_path)
            else:
                dir_dic = os.listdir(path)

            ls = " ".join(dir_dic)
            print(ls)

ls 模块

import os

def get_arg(cmd) -> str:
    arg_ls = []
        
    cmd_arg_ls = cmd.split(' ')[1:]
    cmd_arg_ls.append('')
    for arg in cmd_arg_ls:
        if arg.startswith('-'):
            arg_ls.append(arg)
            cmd_arg_ls.remove(arg)
    # print(arg_ls)
    # print(cmd_arg_ls)
    return arg_ls, cmd_arg_ls[0]
    
def d_(path):
    dir_path = os.path.dirname(path)
    dir_name = dir_path.split('\\')[-1]
    # print(dir_path)
    print(dir_name)
    # return dir_name

def l_(path):
    return os.system(f'powershell dir {path}')

总体思路

总的思路来说是比较简单的，拿到输入的参数执行相应的功能。在获取参数的函数里，是通过分割参数实现的。需要注意的是关于路径的处理（本身没有输入路径参数怎么处理，输入了又怎么处理？），还需要考虑如何实现相关参数的功能。