列出名称包含python日期字符串的文件

Question

I have this code to list files like '*20150304.csv' but returns nothing

#!/usr/bin/env python
dir_local = '/var/log/'

import os
import glob
from datetime import date, timedelta

today = date.today
yesterday = date.today() - timedelta(1)
YEST = yesterday.strftime('%Y%m%d')

glob_pattern='*YEST.csv'

for fname in glob.glob(dir_local + os.sep + glob_pattern):
    print fname

However, when i replace with

for fname in glob.glob('/var/log/' + os.sep + '*20150304.csv'):

I get the desired result though the date will be changing everyday and hence need to list new files. What can i do?

I have read this link list is coming as blank in python but we do not seen to have the same problem.

Answer 1

You just need to generate the current date (or yesterday's date?) as a string. Try this:

yesterday = datetime.date.today() - datetime.timedelta(days=1)
yesterday.strftime('%Y%m%d')

Now you can put that in your glob .

Answer 2

Replace:

glob_pattern='*YEST.csv'

with:

glob_pattern = '*{0}.csv'.format(YEST)