https://segmentfault.com/a/1190000003933903

定时：

#!/usr/bin/env python
#coding=utf8
import time
import requests

while True:
    current_time = time.localtime(time.time())

    if((current_time.tm_hour == 0) and (current_time.tm_min == 0) and (current_time.tm_sec == 01)):
        url = 'xxxxxxxxxxxxxxxxxxxxxx/'
    res = requests.get(url)
    print res
        print "Hello World",current_time.tm_hour,current_time.tm_min,current_time.tm_sec
    time.sleep(1)