auto save

my_app.py

 import tkinter
+from tkinter import messagebox
+import json
 
-def login_to_reg():    # 登录界面转注册界面
-    pass
+with open("user.txt","r",encoding="utf-8") as file:
+    a=file.read()#读取的数据是json数据的字符串
+    users=json.loads(a)#将json字符串转换为python字典
 
+def login_to_reg():    # 登录界面转注册界面
+    #关闭登录页面destroy()
+    app_login.root.destroy()
+    #声明全局变量
+    global app_reg
+    #展示注册页面
+    app_reg=My_register()
+    app_reg.show()
 def reg_to_login():   # 注册界面转登录界面
-    pass
+    #关闭注册页面
+    app_reg.root.destroy()
+    #声明全局变量
+    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","请完善信息")
+    elif name in users:
+        messagebox.showwarning("提示","该账号已被注册")
+    elif password1 != password2:
+        messagebox.showwarning("提示","前后密码输入不一致")
+    else:
+        users[name]=password1#将数据添加到字典中
+        a=json.dumps(users,ensure_ascii=False)#将字典转换为json字符串
+        with open("user.txt","w",encoding="utf-8") as file:
+            file.write(a)
+        messagebox.showwarning("提示","注册成功")
+        reg_to_login()
+
+
 
 def login():    # 登录验证
-    pass    
+    name,password=app_login.get_input()
+    pwd=users.get(name)#pwd是文本里面，也就是一个网站的数据库中注册时的密码
+    if pwd==password:
+        messagebox.showinfo("提示","登录成功")
+    else:
+        messagebox.showwarning("提示","登录失败")
 
 class My_login():       # 登录窗口
     def __init__(self):

user.txt

-{"admin": "123456"}
\ No newline at end of file
+{"admin": "123456", "python": "123", "1": "1"}
\ No newline at end of file

user1.txt

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