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Python HTTP POST binary file upload with pycurl (Python recipe) by Robert Lujo
ActiveState Code (http://code.activestate.com/recipes/576422/)

There is a way to upload file with standard python libraries (urllib, httplib, ...) as explained at http://code.activestate.com/recipes/146306/. But that didn't worked for me for binary data. I didn't liked/tried solution explained at http://fabien.seisen.org/python/urllib2_multipart.html, so I tried with pycurl (http://pycurl.sourceforge.net/ wrapper for http://curl.haxx.se/libcurl/) because it is std. lib for php, and uploading the file is very simple (just add @<path-to-file> to post variable value). It was a little hard to find proper way because there is no such example or documentation. But I found it, and it is so simple ;)

I supply django test application which receives file that is uploaded.

Python, 38 lines
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# --------- upload_file.py ----------------
# upload binary file with pycurl by http post
c = pycurl.Curl()
c.setopt(c.POST, 1)
c.setopt(c.URL, "http://127.0.0.1:8000/receive/")
c.setopt(c.HTTPPOST, [("file1", (c.FORM_FILE, "c:\\tmp\\download\\test.jpg"))])
#c.setopt(c.VERBOSE, 1)
c.perform()
c.close()
print "that's it ;)"

# --------------------------------
# DJANGO RECEIVE TEST APPLICATION
# --------------------------------

# --------- urls.py ----------------
from django.conf.urls.defaults import *
urlpatterns = patterns('',
    (r'^receive/$', 'web.views.receive'),
    )

# --------- web\views.py ----------------
def receive(request):
   assert request.method=="POST"
   print "receive.META.SERVER_PORT", request.META["SERVER_PORT"], request.POST
   files = []
   for multipart_name in request.FILES.keys():
      multipart_obj = request.FILES[multipart_name]
      content_type  = multipart_obj['content-type']
      filename      = multipart_obj['filename']  
      content       = multipart_obj['content']  
      files.append((filename, content_type, content))
      import datetime
      # write file to the system - add timestamp in the name
      file("c:\\tmp\\%s_%s" % (datetime.datetime.now().isoformat().replace(":", "-"), filename), "wb").write(content)
   
   fnames = ",".join([fname for fname, ct, c in files])
   return HttpResponse("me-%s-RECEIVE-OK[POST=%s,files=%s]" % (request.META["SERVER_PORT"], request.POST.values(), fnames ))
Tags: django, http, post, upload

1 comment

Robert Lujo (author) 15 years, 8 months ago  # | flag

Heh, it seems that there is documentation how to do it: http://pycurl.cvs.sourceforge.net/pycurl/pycurl/tests/test_post2.py?view=markup