gistfile1.py

#!/usr/bin/env python
# vim: fileencoding=utf8:et:sw=4:ts=8:sts=4

from cStringIO import StringIO
import select

import pycurl


c1 = pycurl.Curl()
c2 = pycurl.Curl()

body1 = StringIO()
body2 = StringIO()

c1.setopt(pycurl.URL, "http://www.google.com/")
c1.setopt(pycurl.WRITEFUNCTION, lambda data: body1.write(data) or len(data))

c2.setopt(pycurl.URL, "http://www.yahoo.com/")
c2.setopt(pycurl.WRITEFUNCTION, lambda data: body2.write(data) or len(data))

multi = pycurl.CurlMulti()
multi.add_handle(c1)
multi.add_handle(c2)

while 1:
    ret, active_fds = multi.perform()
    print "multi.perform:", (ret, active_fds)
    if ret != pycurl.E_CALL_MULTI_PERFORM:
        break

fdset = multi.fdset()
print "multi.fdset:", fdset

print "select:", select.select(*(fdset + (1.0,)))