save project

diy1.py

+i=3
+username = "python"
+userpassword = "123456"
+while True:
+    if i>0:
+        name = input("请输入用户名:")
+        password = input("请输入密码:")
+        i-=1
+        if name == username and password == userpassword:
+            print("登录成功!")
+            break
+        if name != username:
+            print("名字错误！")
+            continue
+        if password != userpassword:
+            input("请重新输入密码")
+    else:
+        print("账户以锁定，请到我司解锁")
+        exit()
+print("欢迎来到贝尔编程！")