list - python 求助

Question

大神好，我在python中，想在http://paper.people.com.cn/rm...后面加上一年的年月日，就是变成：http://paper.people.com.cn/rm...http://paper.people.com.cn/rm...http://paper.people.com.cn/rm...http://pape...

PHP中文网 · Answer

The datetime module can generate time series and then concatenate strings.
If it is a crawler, the parameters in requests.get() in the Requests module can also be spliced.

Uh-huh. . . Allow me to tell you a dumber way.
I mainly do data analysis and visualization, and I am not a computer person. When I encounter problems, I first look for ready-made functions.

import datetime
from datetime import datetime as dt

startday = dt(2016, 1, 1)
ds = []
span = datetime.timedelta(1)

for i in range(365 * 2 + 1):
    ds.append(startday)
    startday += span

dss = [i.strftime('%Y-%m/%d') for i in ds]

rawurl = 'http://paper.people.com.cn/rmrb/html/'
url = [rawurl + i for i in dss]

阿神 · Answer

Python method to get specific time in the past:

#!/usr/bin/python 
import time 
#取一天前的当前具体时间  
time.strftime('%Y-%m-%d %T',time.localtime(time.time()-24*60*60)) 
#取15天前的当前具体时间  
time.strftime('%Y-%m-%d %T',time.localtime(time.time()-15*24*60*60)) 
#取15天前当前具体时间的前2小时  
time.strftime('%Y-%m-%d %T',time.localtime(time.time()-15*24*60*60-2*60*60))

Python method to get specific time in the future:

#!/usr/bin/python  
import time 
 
#取一天后的当前具体时间  
time.strftime('%Y-%m-%d %T',time.localtime(time.time()+24*60*60))  
 
#取20天后的当前具体时间  
time.strftime('%Y-%m-%d %T',time.localtime(time.time()+20*24*60*60))  
 
#取20天后当前具体时间的前2小时  
time.strftime('%Y-%m-%d %T',time.localtime(time.time()+20*24*60*60-2*60*60))

For details, you can check out this Python time operation example and summary of time formatting parameters http://www.php.cn/python-tuto...