摘要：
https://blog.csdn.net/qq_34243847/article/details/87885434 阅读全文
摘要：
https://blog.csdn.net/fun_always/article/details/103357840 阅读全文
摘要：
import time time_start=time.time() time_end=time.time() print('totally cost',time_end-time_start) 阅读全文