save project

lys.py

+username = "奔赴1204"
+userpassword = "1204"
+while True:
+    if i>0:
+        name = input("请输入用户名:")
+        password = input("请输入密码:")
+        i-=1
+            if name == username and password == userpassword:
+                print("登录成功!")
+                break
+            if name != username：
+                print("用户名不存在！请从新输入用户名")
+                break
+            if password != userpassword:
+                print("密码错误，请从新输入密码")  
+    else:
+        print("你账户没了!")
+        exit()  
+print("欢迎来到原神!")
\ No newline at end of file