download album from chiasenhac

chiasenhac.py

"""script for downloading album from chiasenhac
"""
import time
import sys
from pathlib import Path
from bs4 import BeautifulSoup
import requests
from multiprocessing import Pool

BASE_OUTPUT = 'albums'
NUMBER_PROCESS = 8
MUSIC_QUALITY = '320'


def download_file(params):
    """download single file"""
    url, album_path = params

    down_page = requests.get(url).text
    down_soup = BeautifulSoup(down_page, 'html.parser')
    filename = down_soup.title.text.split('Download: ')[-1].split(" - ")[0] + ".mp3"
    filename = filename.replace(u'Tải nhạc ', '')

    path = Path(album_path) / filename
    if path.exists():
        print(f"file {filename} exists")
        return

    start_time = time.time()
    print("start: {}".format(filename))
    for link in down_soup.find_all('a'):
        href = link.get('href')
        if href and href.find('.mp3') > 0 and href.find(MUSIC_QUALITY) > 0:
            with path.open('wb') as f:
                content = requests.get(href).content
                f.write(content)
    print("done : {}::{}s".format(filename, (time.time() - start_time)))


def main(url):
    org_page = requests.get(url).text
    org_soup = BeautifulSoup(org_page, 'html.parser')

    list_url = set()  # link might appear twice, so use set
    d_table = org_soup.find('div', class_='d-table')
    for cell in d_table.select('div.name.d-table-cell'):
        a_tag = cell.find('a')
        if a_tag:
            list_url.add(a_tag.get('href'))
    print(f'songs: {len(list_url)}')

    # meta
    # artist, album, year
    artist = org_soup.find_all(text="Ca sĩ: ")[0].parent.parent.find('a').text
    album = org_soup.find_all(text="Album: ")[0].parent.parent.find('a').text

    album_path = Path(BASE_OUTPUT) / artist / album
    if not album_path.exists():
        album_path.mkdir(parents=True)

    params = [
        (url, str(album_path))
        for url in list_url
    ]

    p = Pool(processes=NUMBER_PROCESS)
    p.map(download_file, params)
    p.close()


if __name__ == '__main__':
    if len(sys.argv) == 1:
        print("Missing url")
        sys.extit(1)
    main(sys.argv[1])

Is there a good site (or) resource for learning to do such stuff using Python ?

@himanshuxd: For me, I studied by just start coding and google "how to python" (mostly in docs and StackOverFlow). I had got the basic programming skills in C/C++, Java from college. So this part is really easy, Python is easy to learn.

There are some good books: Learn Python the hard way, Dive into Python. For the course, I do not know many. Codeacademy seems a good place to start.

When you got the basic, just read the code of popular language, you will learn a lot. Like Flask, Django or reddit... there are many.

Update, #chiasenhac now requires login to download high quality (>= 320Kbps) music. So this script will only work for 128Kbps.