save project

diy2.py

 username="python"
 username="python"
 userpassword="123456"
 userpassword="123456"
+i=3
 while True:
 while True:
     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")
+    if i>0:
         if name == username and password == userpassword:
         if name == username and password == userpassword:
             print("登陆成功")
             print("登陆成功")
             break
             break
         if name != username:
         if name != username:
             print("用户名错误!请重新输入")
             print("用户名错误!请重新输入")
+            i=i-1
             continue
             continue
         if password != userpassword:
         if password != userpassword:
             print("密码错误!请重新输入")
             print("密码错误!请重新输入")
+            i=i-1
+    else:
+        print("账户已永久锁定")
+        exit()
 print("欢迎来到贝尔编程")
 print("欢迎来到贝尔编程")