视频地址：/video/BV1ap4y1n7DG

try:

import os

(相关资料图)

def helps():

print("""Lesh [] Le 2023-8

help\t显示帮助

run\t运行程序

cd\t切换目录

dir\t查看当前目录下的文件

cmd\t运行控制台命令

set\t建立变量

echo\t输出文本

print\t输出变量

list\t查看所有变量

del\t删除变量

exit\t退出

# 命令参数使用$代替空格""")

def run(file):

('"'+file+'"')

def cd(cd):

try:

if cd == "..":

(('..'))

else:

(() + "\\" + cd)

except FileNotFoundError:

print("找不到目录",cd)

def listdir():

listdir = ()

for i in listdir:

print(i)

def listver(vers):

for i in vers:

print(i + "\t" + vers[i])

vers = {}

helps()

cmds = ["help","run","cd","dir","cmd","set","echo","print","list","del","exit"]

while True:

cmd = input(() + ">").split(" ")

try:

if cmd[0] in cmds:

if cmd[0] == cmds[0]: helps()

elif cmd[0] == cmds[1]: run(cmd[1].replace("$"," "))

elif cmd[0] == cmds[2]: cd(cmd[1].replace("$"," "))

elif cmd[0] == cmds[3]: listdir()

elif cmd[0] == cmds[4]: print((cmd[1].replace("$"," ")).read())

elif cmd[0] == cmds[5]: vers[cmd[1].replace("$"," ")] = cmd[2].replace("$"," ")

elif cmd[0] == cmds[6]: print(cmd[1].replace("$"," "))

elif cmd[0] == cmds[7]: print(vers[cmd[1].replace("$"," ")])

elif cmd[0] == cmds[8]: listver(vers)

elif cmd[0] == cmds[9]: (cmd[1].replace("$"," "),)

elif cmd[0] == cmds[10]: break

else:

print(cmd[0],"不是命令")

except IndexError:

print(cmd[0],"命令需要参数")

except KeyError:

print("没有",cmd[1].replace("$"," "),"变量")

except:

print("发生未知错误")

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