save project

my_app.py

 import tkinter
+from tkinter import messagebox
+import json
+with open("C:\\Users\\Administrator\\Documents\\level3-lesson18-diy2\\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
     app_login.root.destroy()
@@ -14,7 +19,21 @@ def reg_to_login():   # 注册界面转登录界面
 
 
 def register():     # 注册验证
-    pass
+    name,password1,password2 = app_reg.get_input()
+    if name == "" or password1=="" or password2=="":
+        messagebox.showwarning('警告','请填写完整的注册资料')
+    elif name in users:
+        messagebox.showwarning('错误','用户名已存在')
+    elif password1 != password2:
+        messagebox.showwarning('错误','两次密码不一致')
+    else:
+        users[name] = password1
+        content = json.dumps(users)
+        with open("C:\\Users\\Administrator\\Documents\\level3-lesson18-diy2\\user.txt","w",encoding="utf-8") as f:
+            f.write(content)
+        messagebox.showinfo('成功','注册成功')
+        login.show()
+
 
 def login():    # 登录验证
     pass