httplib and buffered data

[dsavitsk]

i am capturing the data being returned from a script running on a web
server.  The script takes several minutes to run, and trickles back data a
little at a time.
Using httplib (or anything else) is there a way to capture the data line by
line instead of as a lump sum with getfile()? i would like to alert the user
as to the % of the data (a known quantity) that has been processed.

thanks,

doug