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,passward1,passward2=app_reg.get_input()
+    if name=="" or passward1=="" or passward2=="":
+        messagebox.showwarning("警告","信息填写不完整")
+    if name in users:
+        messagebox.showwarning("警告","用户名已存在")
+    if passward1 != passward2:
+        messagebox.showwarning("警告","两次密码不一样")
+    else:
+        users[name]=passward1
+        center = json.dumps(users)
+        with open("user.txt",'w',encoding='utf-8') as f:
+            f.write(center)
+        messagebox.showwarning("成功","注册成功")
+        reg_to_login()
 def login():    # 登录验证
-    pass    
+    yhm,mima = app_login.get_input()
+    pwd = users.get(yhm)
+    if pwd == mima:
+        messagebox.showwarning("成功","登录成功")
+    else:
+        messagebox.showwarning("失败","账号或密码错误")    
 
 class My_login():       # 登录窗口
     def __init__(self):

user.txt

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