save project

diy2.py

 username = "python"
 userpassword = "123456"
+cishu=0
 while True:
+    if  not cishu>5:
         name = input("请输入用户名:")
         password = input("请输入密码:")
         if name == username and password == userpassword:
@@ -8,9 +10,14 @@ while True:
             break
         if name != username:
             print("用户名错误")
+            cishu=cishu+1
             continue
         if password != userpassword:
             print("密码错误")
+            cishu=cishu+1
+    else:
+        print("煞笔")
+        exit()
 print("欢迎来到贝尔编程!")