python requests file download

download.py

import requests
import re
import time

url_base = 'http://xxx.site/{}.mp3'

def download(name):
	url = url_base.format(name)
	print(url)
	r = requests.get(url, allow_redirects=True)
	filename = '{}.mp3'.format(name)
	open(filename, 'wb').write(r.content)

for i in range(1, 31):
	index = '{:02}'.format(i)
	url = url_base.format(index)
	name = index
	download(name)
	name = '0{}_1'.format(index)
	download(name)
	name = '0{}_2'.format(index)
	download(name)
	name = '0{}_3'.format(index)
	download(name)
	name = '0{}_4_1'.format(index)
	download(name)
	name = '0{}_4_2'.format(index)
	download(name)
	name = '0{}_5'.format(index)
	download(name)

	time.sleep(1)