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Editorial Team
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Asked: 2026-05-30T06:15:24+00:00

I am writing a small app on Google App Engine to update the pictures

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I am writing a small app on Google App Engine to update the pictures in our users profiles. It takes there username and an image and does a put to there profile, uploading the image. Here is what i have:

import atom.data
import gdata.data
import gdata.contacts.client
import gdata.contacts.data
import cgi
import wsgiref.handlers

from google.appengine.api import users
from google.appengine.ext import webapp

email = 'admin@domain.com'
password = 'password'
domain = 'domain.com'

gd_client = gdata.contacts.client.ContactsClient(domain=domain)
gd_client.ClientLogin(email, password, 'photoUpdate')


class PicPage(webapp.RequestHandler):
    def get(self):
        self.response.out.write("""<html><head><title>Sasaki Photo Uploader</title>
                                    <link type="text/css" rel="stylesheet" href="/stylesheets/form.css"></head>
                                    <body>
                                    <form action="/" enctype="multipart/form-data" method="post">
                                    <div><label>Person Name</label></div>
                                    <div><textarea name="name" rows="2" columns "60"></textarea></div>
                                    <div><label>Image</label></div>
                                    <div><input type="file" name="img"/></div>
                                    <div><input type="submit" value="Upload" /></div>
                                    </form>
                                    </body>
                                    </html>""")

    def post(self):
        person_name = self.request.get('name')
        img_img = self.request.get('img')
        profile_url = 'https://www.google.com/m8/feeds/photos/profile/domain.com/%s' % person_name
        media_object = img_img
        print(profile_url)
        profile = gd_client.GetProfile(profile_url)
        print(profile)
        gd_client.ChangePhoto(media_object, profile)
        self.redirect('/')

def main():
  application = webapp.WSGIApplication(
                                       [('/', PicPage)
                                        ],
                                       debug=True)

  wsgiref.handlers.CGIHandler().run(application)

if __name__=="__main__":
  main()

When I run this it returns the error:

 Traceback (most recent call last):
  File "C:\Program Files (x86)\Google\google_appengine\google\appengine\ext\webapp\_webapp25.py", line 703, in __call__
    handler.post(*groups)
  File "C:\GAE_Local_Files\picupload\sasakipic.py", line 40, in post
    profile = gd_client.GetProfile(profile_url)
  File "C:\GAE_Local_Files\picupload\gdata\contacts\client.py", line 375, in get_profile
    auth_token=auth_token, **kwargs)
  File "C:\GAE_Local_Files\picupload\gdata\client.py", line 652, in get_entry
    desired_class=desired_class, **kwargs)
  File "C:\GAE_Local_Files\picupload\gdata\client.py", line 278, in request
    version=get_xml_version(self.api_version))
  File "C:\GAE_Local_Files\picupload\atom\core.py", line 520, in parse
    tree = ElementTree.fromstring(xml_string)
  File "<string>", line 106, in XML
ParseError: not well-formed (invalid token): line 1, column 0

i am not sure if this is because I am passing the profile url off as a string or uploading the pic wrong. Any advice, much appreciated.

EDIT Added full stack trace

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1 Answer

  1. Editorial Team

    Well, the answer lies in the issue that I pointed out in my edit. That line:

    profile = gd_client.GetProfile(profile_url)

    Is trying to query the picture located in the profile, but if it doesn’t exist it breaks, so I edit the try statement to pass the profile url directly:

    try:
    gd_client.ChangePhoto(media_object, profile_url)

    It worked great. This is a great little tool to update picture using App Engine, and you don’t even have to upload it, just run it locally on a app engine test server. I want to try and add some functionality, like image cropping, or resizing before the upload, large images look fine on the contact profile page, but can get distorted in the chat image.

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