download.py

import os
import os.path as osp
from six.moves import urllib
import ssl


def download_url(url, folder, log=True):
    r"""Downloads the content of an URL to a specific folder.

    Args:
        url (string): The url.
        folder (string): The folder.
        log (bool, optional): If :obj:`False`, will not print anything to the
            console. (default: :obj:`True`)
    """

    filename = url.rpartition("/")[2]
    path = osp.join(folder, filename)

    if osp.exists(path):  # pragma: no cover
        if log:
            print("Using exist file", filename)
        return path

    if log:
        print("Downloading", url)

    try:
        os.makedirs(folder)
    except:
        pass
    context = ssl._create_unverified_context()
    data = urllib.request.urlopen(url, context=context)

    with open(path, "wb") as f:
        f.write(data.read())

    return path