Python urllib2 Progress Hook

Question

I am trying to create a download progress bar in python using the urllib2 http client. I\'ve looked through the API (and on google) and it seems that urllib2 does not allow

Answer 1

Minor modification to Triptych's response to allow for actually writing out the file (python3):

from urllib.request import urlopen

def chunk_report(bytes_so_far, chunk_size, total_size):
    percent = float(bytes_so_far) / total_size
    percent = round(percent*100, 2)
    sys.stdout.write("Downloaded %d of %d bytes (%0.2f%%)\r" %
                     (bytes_so_far, total_size, percent))

    if bytes_so_far >= total_size:
        sys.stdout.write('\n')


def chunk_read(response, chunk_size=8192, report_hook=None):
    total_size = response.info().get("Content-Length").strip()
    total_size = int(total_size)
    bytes_so_far = 0
    data = b""

    while 1:
        chunk = response.read(chunk_size)
        bytes_so_far += len(chunk)

        if not chunk:
            break

        if report_hook:
            report_hook(bytes_so_far, chunk_size, total_size)

        data += chunk

    return data

Usage:

with open(out_path, "wb") as f:
    response = urlopen(filepath)
    data_read = chunk_read(response, report_hook=chunk_report)

    f.write(data_read)