save project

my_app.py

 import tkinter
+import json
+from tkinter import messagebox
+
+# with open('user.txt','w",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 +20,19 @@ def reg_to_login():   # 注册界面转登录界面
 
 def register():     # 注册验证
     name,password1,password2=app_reg.get_input()
-    if name=""
+    if name=="" or password1=="" or password2=="":
+        messagebox.showwarning('身份信息未填写完整')
+    elif name in users:
+        messagebox.showwarning('已有此用户名')
+    elif password1!=password2:
+        messagebox.showerror('密码错误')
+    else:
+        users[name]=password1
+        contont=json.dumps(users)
+        with open('user.txt','w',encoding='utf-8') as file:
+            file.write(content)
+        messagebox.showinfo('注册成功')
+        reg_to_login()
 
 def login():    # 登录验证
     pass    

user.txt

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