auto save

my_app.py

 import tkinter
-
+import json
+from tkinter import messagebox
+with open('user.txt','r',encoding='utf-8')as file:
+    info = file.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('提示','请填写完整的信息')
+    elif password1 != password2:
+        messagebox.showwarning('提示','两次密码不一致')
+    elif name in users:
+        messagebox.showwarning('提示','用户名已存在')        
+    else:
+        users[name] = password1
+        value = json.dumps(users,ensure_ascii = False)
+        with open('user.txt','w',encoding='utf-8')as file:
+            file.write(value)
+        messagebox.showinfo('成功','注册成功')
+        reg_to_login()
 def login():    # 登录验证
-    pass    
+    pass   
 
 class My_login():       # 登录窗口
     def __init__(self):

user.txt

-{"admin": "123456"}
\ No newline at end of file
+{"admin": "123456", "1": "1"}
\ No newline at end of file