Posting a file on 4chan via python

i have been messing with python for about 2 days now and i was wondering if some of you had experience using the urllibmodule.
im trying to write a file dumper to upload images, i have been researching and i dont seem to find any practical examples about this topic

>>26

'-._                  ___.....___
    `.__           ,-'        ,-.`-,            HE'S RIGHT,
        `''-------'          ( p )  `._          YOU KNOW.
                              `-'      \    
                                        \
                              .         \
                               \---..,--'
   ................._           --...--,
                     `-.._         _.-'
                          `'-----''