Post an image to API with Python OAuth

postimage.py

'''encode_multipart_formdata taken from @ryanmcgrath `twython`'''

def post_image(self):
    files = [("photo", 'image.jpg', open('/path/to/image.jpg', 'rb').read())]

    params = {
        'oauth_version': "1.0",
        'oauth_nonce': oauth.generate_nonce(),
        'oauth_timestamp': int(time.time()),
        'oauth_token': self.oauth_token,
        'oauth_consumer_key': self.api_key,
    }

    #create a fake request with your upload url and parameters
    faux_req = oauth.Request(method='POST', url=self.upload_api_url, parameters=params)

    #sign the fake request.
    signature_method = oauth.SignatureMethod_HMAC_SHA1()
    faux_req.sign_request(signature_method, self.consumer, self.token)

    #create a dict out of the fake request signed params
    params = dict(parse_qsl(faux_req.to_postdata()))

    content_type, body = self.encode_multipart_formdata(params, files)
    headers = {'Content-Type': content_type, 'Content-Length': str(len(body))}
    r = urllib2.Request('%s' % self.upload_api_url, body, headers)
    return urllib2.urlopen(r).read()

@staticmethod
def encode_multipart_formdata(fields, files):
    import mimetools
    import mimetypes
    BOUNDARY = mimetools.choose_boundary()
    CRLF = '\r\n'
    L = []
    for (key, value) in fields.items():
        L.append('--' + BOUNDARY)
        L.append('Content-Disposition: form-data; name="%s"' % key)
        L.append('')
        L.append(value)
    for (key, filename, value) in files:
        L.append('--' + BOUNDARY)
        L.append('Content-Disposition: form-data; name="%s"; filename="%s"' % (key, filename))
        L.append('Content-Type: %s' % mimetypes.guess_type(filename)[0] or 'application/octet-stream')
        L.append('')
        L.append(value)
    L.append('--' + BOUNDARY + '--')
    L.append('')
    body = CRLF.join(L)
    content_type = 'multipart/form-data; boundary=%s' % BOUNDARY
    return content_type, body

Yeah, I'll fork it sometime tomorrow!

…

Sent from my iPhone

On Jan 3, 2012, at 10:55 PM, Ryan McGrath ***@***.*** wrote: Nice! Any chance of throwing this into Twython? Seems really clean, quite impressed. ;) --- Reply to this email directly or view it on GitHub: https://gist.github.com/1558113

Awesome! Let me know if I can help in any way.