save project

diy2.py

 username = "python"
 username = "python"
 userpassword = "123456"
 userpassword = "123456"
+cishu=3
 while True:
 while True:
+    if cishu>0:
         name = input("请输入用户名:")
         name = input("请输入用户名:")
         password = input("请输入密码:")
         password = input("请输入密码:")
+        cishu -= 1
         if name == username and password == userpassword:
         if name == username and password == userpassword:
             print("登录成功!")
             print("登录成功!")
             print("欢迎来到贝尔编程!")
             print("欢迎来到贝尔编程!")
             break
             break
         elif name !=password:
         elif name !=password:
             print("账号不存在，请重输！")
             print("账号不存在，请重输！")
+            print("你还有"+str(cishu)+"次输入的机会!")
             continue
             continue
         elif password != userpassword:
         elif password != userpassword:
             print("密码不存在，请重输！")
             print("密码不存在，请重输！")
+            print("你还有"+str(cishu)+"次输入的机会！")
         else:
         else:
             print("用户名和密码错误!请重新输入")
             print("用户名和密码错误!请重新输入")
+            print("你还有"+str(cishu)+"次输入的机会！")
+    else:
+        print("你的次数已用完！")
\ No newline at end of file