auto save

my_app.py

 import tkinter
 import tkinter
+from tkinter import messagebox # 从tkinter模块中导入messagebox组件
+import json   # 导入json模块
+
+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
     app_login.root.destroy()       # 调用destroy()方法关闭窗口
     app_login.root.destroy()       # 调用destroy()方法关闭窗口
@@ -13,7 +19,20 @@ def reg_to_login():   # 注册界面转登录界面
     app_login.show()            # 调用show()方法打开，前面接全局变量名app_login                                   # 调用show()方法打开，前面接全局变量名app_login
     app_login.show()            # 调用show()方法打开，前面接全局变量名app_login                                   # 调用show()方法打开，前面接全局变量名app_login
 
 
 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 user:
+        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)
+        messagebox.showinfo("成功", "注册成功")
+        reg_to_login()  
 
 
 def login():    # 登录验证
 def login():    # 登录验证
     pass    
     pass