save project

1.py

+username="89611145.QQ.com"
+userpassword="yxh20091201"
+while True:
+    name = input("用户名：")
+    password = input("密码：")
+    if name == username and password == userpassword :
+        print("登陆成功")
+        break
+    if name != username :
+        print("用户名错误")
+    if password != userpassword :
+        print("密码错误")
+
+print("89611145.QQ.com,欢迎你")