python3 http://ropas.snu.ac.kr/~kwang/4190.310/mooc/ downloader

downloader.py

# https://github.com/serithemage/python_exercise/blob/master/downloader/downloader.py
# 이 python2으로 작성되어 있어, 참조하여 python3으로 재작성하였습니다.

# beautifulsoup4가 없는 분들은 아래처럼 pip로 통해 설치하세요.
# pip install beautifulsoup4

import urllib
import threading
import urllib.request
import time
from bs4 import BeautifulSoup

url = "http://ropas.snu.ac.kr/~kwang/4190.310/mooc/"
html_doc = urllib.request.urlopen(url).read()
soup = BeautifulSoup(html_doc, 'html.parser')


mp4list = []
for link in soup.find_all('a'):
	href = link.get('href')

	if href != None and href.endswith('.mp4'):
		mp4list.append(href)


def download(url, fileName):
    urllib.request.urlretrieve(url+fileName, fileName)
    print(fileName + " download end")


for mp4 in mp4list:

    while 10 < threading.activeCount():
        time.sleep(3)

    t = threading.Thread(target=download, args=(url, mp4))
    t.daemon = True
    t.start()