auto save

my_app.py

 import tkinter
+from tkinter import messagebox
+import json
+
+with open("user.txt","r",encoding="utf-8")as f:
+    info=f.read()
+    users=json.loads(info)
 
 def login_to_reg():    # 登录界面转注册界面
-    pass
+    app_login.root.destroy()
+    global app_reg
+    app_reg=My_register()
+    app_reg.show()
 
 def reg_to_login():  # 注册界面转登录界面
-    pass
+    app_reg.root.destroy()
+    global app_login
+    app_login=My_login()
+    app_login.show()
 
 def register():     # 注册验证
-    pass
+    name,password1,password2=app_reg.get_input()
+    if name=="" or password1=="" or password2=="":
+        messagebox.showwarning("警告","请填写完整的资料")
+    elif name in users:
+        massagebox.showwarning("错误","密码与注册表中不一致")
+    else:
+        users[name]=password1
+        content=json.dumps(users)
+        with open("users.txt","w",encoding="utf-8")as file:
+            file.write(content)
+        messagebox.showinfo("成功","注册成功")
+        login_show()
 
 def login():    # 登录验证
-    pass    
+    name,password=app_login.get_input()
+    pwd=users.get(name)
+    if pwd == password:
+        messagebox.showinfo("成功","登录成功")
+    else:
+        messagebox.showwarning("错误","用户名或密码错误")
 
 class My_login():       # 登录窗口
     def __init__(self):
@@ -88,10 +116,10 @@ class My_register():        # 注册窗口
         lab3.place(x=50, y=200)
 
         # 注册界面的提交、取消按钮
-        button1 = tkinter.Button(self.root, text='提交', bg="lightblue",
+        button1 = tkinter.Button(self.root, text='提交', bg="lightgreen",
                   width=15,command=register)
         button1.place(x=230, y=250)
-        button1 = tkinter.Button(self.root, text='取消', bg="lightgreen",
+        button1 = tkinter.Button(self.root, text='取消', bg="lightbule",
                   width=15, command=reg_to_login)
         button1.place(x=80, y=250)
         # 进入消息循环

users.txt

+{"admin": "123456", "python": "999999"}
\ No newline at end of file