save project

diy2.py

+i=3
 username = "python"
 userpassword = "123456"
 while True:
-    name = input("请输入用户名:")
-    password = input("请输入密码:")
-    if name == username and password == userpassword:
-        print("登录成功!")
-        break
-    elif  name!=username:
-        print("账号错了")
+    if i>0:
+        name = input("请输入用户名:")
+        password = input("请输入密码:")
+        i=i-1
+        if name == username and password == userpassword:
+            print("登录成功!")
+            break
+        if  name!=username:
+            print("账号错了")
+        if  name!=username:
+            print("账号错了")
     else:
-        print("密码错了")
+        print("你的账户已锁定")
+        exit()
 print("欢迎来到贝尔编程")