save project

diy2.py

+username = input("请设置用户名：")
+userpassword = input("请设置密码：")
+print("用户名")
+print("和")
+print("密码")
+print("设")
+print("置")
+print("中")
+print("噢")
+print("!")
+while True:
+    name = input("请输入用户名:")
+    password = input("请输入密码:")
+    if name == username and password == userpassword:
+        print("登录成功!")
+        break
+    if name!=username:
+        print("用户名不存在，请重新输入") 
+        continue
+    if password!=userpassword:
+        print("密码错误!请重新输入")
+print("欢迎来到贝尔编程!")
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