save project

my_app.py

 import tkinter
-
+import json
+from tkinter import messagebox
+with open('user.txt','r',encoding='utf-8') as f:
+    a = f.read()
+    users = json.loads(a)
+    print(users)
 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','用户名或密码不能为空')
+    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
+        user1 = json.dumps(users)
+        messagebox.showinfo('提示','注册成功')
+        print(users)
+        with open('user.txt','w',encoding='utf-8') as b:
+            b.write(user1)
+            app_reg.root.destroy()
+            global app_login
+            app_login = My_login()
+            app_login.show()
+        
+        
 
 def login():    # 登录验证
-    pass    
+    name,password = app_login.get_input()
+    pwd = users.get(name)
+    if pwd == password:
+        messagebox.showinfo('提示','登陆成功')
+    else:
+        messagebox.showerror('提示','用户名或密码错误') 
+      
 
 class My_login():       # 登录窗口
     def __init__(self):
@@ -21,8 +58,8 @@ class My_login():       # 登录窗口
 
     def show(self):         # 登录界面的所有控件
         # Label文本标签，界面提示信息
-        l = tkinter.Label(self.root, text='您好！请登录', bg='green', 
-            font=('宋体', 15), width=40, height=2)
+        l = tkinter.Label(self.root, text='您好！请登录', 
+            font=('楷体', 15), width=40, height=2)
         l.place(x=0, y=0)
         l = tkinter.Label(self.root, text='用户名：', font=("宋体", 12),
             fg="black")
@@ -75,7 +112,7 @@ class My_register():        # 注册窗口
 
         # Label文本标签，窗口界面文字：用户名、密码、确认密码
         lab = tkinter.Label(self.root, text='您好！请填写注册信息',
-              font=('宋体', 15),fg="black", width=40, height=2, bg="green")
+              font=('楷体', 15),fg="black", width=40, height=2)
         lab.place(x=0, y=0)
         lab1 = tkinter.Label(self.root, text='用户名：', font=("宋体", 12),
                fg="black")

user.txt

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