dbs_pr_downloader.py

import wget 
import time
from datetime import date, timedelta

dmy = 20170424

while True:
    try:
        t=time.strptime(str(dmy),'%Y%m%d')
        newdate=date(t.tm_year,t.tm_mon,t.tm_mday)+timedelta(1)
        url = 'http://www.wst.univie.ac.at/~wanek/dbsprf/dbs_vo_' + str(newdate.strftime('%Y%m%d')) + '.pdf'

        try:
            filename = wget.download(url)
            print('pobralo sie' + str(newdate.strftime('%Y%m%d')))
        except:
            print('nie' + str(newdate.strftime('%Y%m%d')))

    except:
        pass

    dmy -= 1
    if dmy < 20110531:
        break