save project

diy2.py

+username = " "
+userpassword = " "
+i=3
+while True:
+    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
+        else:
+            if name != username:   
+                print("用户名错误!请重新输入")
+                print("温馨提示：还有"+str(i)+"生命")
+            else:
+                print("用密码错误!请重新输入")
+    else:
+        print("账户锁定")
+        exit()
+print("欢迎来到贝尔编程!")
\ No newline at end of file