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

Also if the server you are connecting to supports it, look at Etags and the If-Modified-Since and If-None-Match headers.

Using these will take advantage of the webserver's caching rules and will return a 304 Not Modified status code if the content hasn't changed.