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,mima,qrmima = app_reg.get_input()
+    if name=="" or mima=="" or qrmima=="":
+        messagebox.showwarning("警告","请填写您的完整信息")
+    elif name in users:
+        messagebox.showwarning("错误","用户名已经存在")
+    elif mima != qrmima:
+        messagebox.showwarning("错误","两次密码不一致")
+    else:
+        users[name]=mima
+        center=json.dumps(users)
+        with open("user.txt",'w',encoding='utf-8') as f:
+            f.write(center)
+        messagebox.showwarning("提示","注册成功")
+        reg_to_login()
 
 def login():    # 登录验证
-    pass    
+    name,passward=app_login.get_input()
+    pwd = users.get(name)
+    if pwd==passward:
+        messagebox.showwarning("提示","登陆成功")
+    else:
+        messagebox.showwarning("提示","登陆失败")
 
 class My_login():       # 登录窗口
     def __init__(self):

user.txt

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