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:
+    user = f.read()
+    users = json.loads(user)
 
 
 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
+    app_reg = My_register()
+    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
+    app_login = My_login()
+    app_login.show()
 
 
 def register():     # 注册验证
 def register():     # 注册验证
-    pass
+    name,pd1,pd2 = app_reg.get_input()
+    if name == "" or pd1 == "" or pd2 == "":
+        messagebox.showerror("ERROR",r"C:\Users\86132\Documents\level3-lesson18-diy1\my_app.py\nC:\Users\86132\Documents\level3-lesson18-diy1\user.txt")
+    elif name in users:
+        messagebox.showerror("ERROR","用户名已存在")
+    elif pd1 != pd2:
+        messagebox.showerror("ERROR","密码不一致")
+    else:
+        users[name] = pd1
+        messagebox.showerror("失败","注册失败")
+
 
 
 def login():    # 登录验证
 def login():    # 登录验证
-    pass    
+    pass   
 
 
 class My_login():       # 登录窗口
 class My_login():       # 登录窗口
     def __init__(self):
     def __init__(self):
@@ -104,4 +127,5 @@ class My_register():        # 注册窗口
         return self.name, self.password1, self.password2
         return self.name, self.password1, self.password2
 
 
 app_login = My_login()
 app_login = My_login()
-app_login.show()
+app_login.show()
\ No newline at end of file
+