auto save

my_app.py

 import tkinter
 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
 def login_to_reg():    # 登录界面转注册界面
-    pass
+    app_login.root.destroy()
+    global app_reg#创建注册界面实例
+    app_reg = My_register()#显示注册界面
+    app_reg.show()
 
 
 def reg_to_login():   # 注册界面转登录界面
 def reg_to_login():   # 注册界面转登录界面
-    pass
+    app_reg.root.destroy()
+    global app_login  #创建登陆界面实例
+    app_login = My_login()#显示登陆界面
+    app_login.show()
 
 
 def register():     # 注册验证
 def register():     # 注册验证
-    pass
+    name,password1,password2 = app_reg.get_input()
+    if name =="" or password1=="" or password2=="":
+        messagebox.showwarning("警告", "请填写完整的注册资料")
+    elif name in users:
+        messagebox.showwarning("错误", "用户名已经存在!")
+    elif password1 != password2:
+        messagebox.showwarning("错误", "两次密码不一致!")
+    else:
+        users[name] = password1
+        content = json.dumps(users)
+        with open("user.txt", "w", encoding="utf-8") as file:  
+            file.write(content)
+        # 注册成功，跳往登陆界面
+        messagebox.showinfo("成功", "注册成功")
+        login_show()
 
 
 def login():    # 登录验证
 def login():    # 登录验证
     pass    
     pass    

user.txt

-{"admin": "123456"}
+{"admin": "123456", "nihao ": "1234", "\u5f69\u8679": "66666", "ljr": "123", "qwer": "1234"}
\ No newline at end of file