python - how to give a name to downloaded file with async tornado client -

i have python tornado code use files async

from tornado import ioloop , httpclient def get_file(url):     http_client = httpclient.asynchttpclient()     http_client.fetch(url,done)  def done()     print "done" url = "http://localhost/files/ldfhgdksgfjkdfadf/output.pdf" ioloop.ioloop.instance().start() 

what happens file gets saved in current dir "output.pdf", there way asynchttp client specify file name? if call file name , save in different directory other current directory.

what reading response.body in specified callback , write appropriate file, e.g.:

from tornado import ioloop, httpclient   def get_file(url):     http_client = httpclient.asynchttpclient()     http_client.fetch(url, callback=done)   def done(response):     open("my_favorite_directory/my_favorite_filename.pdf", "w") f:         f.write(response.body)     print "done"   get_file("http://samplepdf.com/sample.pdf") ioloop.ioloop.instance().start()