save project

diy2.py

+username = "python"
+userpassword = "123456"
+while True:
+    name = input("请输入用户名:\n")
+    password = input("请输入密码:\n")
+    if name != username :
+        print("密码错误,重新输入")
+        continue
+    elif password!= userpassword:
+        print("密码错误,重新输入")
+        continue
+    else:
+        break
+print("欢迎来到贝尔编程!")
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