save project

my_app.py

@@ -21,7 +21,7 @@ def register():     # 注册验证
     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")
+        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: