save project

diy2.py

 username = "P"
 username = "P"
 userpassword = "L"
 userpassword = "L"
+i=3
 while True:
 while True:
+    if i>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:")
+        i-=1
         if name == username and password == userpassword:
         if name == username and password == userpassword:
             print("登录成功!")
             print("登录成功!")
             break
             break
         if name != username:
         if name != username:
             print("用户名不存在")
             print("用户名不存在")
+            print("温馨提示:您还剩"+str(i)+"次机会")
             continue
             continue
         if password != userpassword:    
         if password != userpassword:    
             print("密码不存在")
             print("密码不存在")
         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")
+    else:
+        print("您的账号已锁定!")
+        exit()
 print("欢迎来到贝尔编程!")
 print("欢迎来到贝尔编程!")
\ No newline at end of file