Get size of a file before downloading in Python

Question

I\'m downloading an entire directory from a web server. It works OK, but I can\'t figure how to get the file size before download to compare if it was updated on the server

Answer 1

For a python3 (tested on 3.5) approach I'd recommend:

with urlopen(file_url) as in_file, open(local_file_address, 'wb') as out_file:
    print(in_file.getheader('Content-Length'))
    out_file.write(response.read())