upload file to GoogleDocs

gistfile1.py

#!/usr/bin/python
# -*- coding: utf-8 -*-
# upload (bin)file to Google Docs.
# 

import sys
import datetime
import os
import os.path
import time
import atom

import gdata.docs
import gdata.docs.client
import gdata.docs.data
import gdata.data
import gdata.client

# create Google Docs client for upload
def create_gd_upload_client():
    client = gdata.docs.client.DocsClient()
    client.ssl = True
    client.http_client.debug = False
    return client

# login..
def login_gd_client(client, user, passwd):
    client.ClientLogin(
        user, 
        passwd, 
        client.source, 
        service='writely')

# uploading file to Google Docs.
def upload_file(c, filename, title):
    print "upload file."
    print "filename:" + filename
    print "title:" + title
    content_type = "application/octet-stream"
    ms = gdata.data.MediaSource( file_path=filename,
                                    content_type=content_type,
                                    content_length=os.path.getsize(filename))
    ru = gdata.client.ResumableUploader(client=c,
                            file_handle=ms.file_handle,
                            content_type=ms.content_type,
                            total_file_size=ms.content_length,
                            desired_class=gdata.data.GDEntry)
    uri = '/feeds/upload/create-session/default/private/full?convert=false'
    new_entry = gdata.data.GDEntry(title=atom.data.Title(text=title))
    updated_entry = ru.UploadFile(resumable_media_link=uri, entry=new_entry)
    
    print "upload done."

def main():
    res = 0
    today = datetime.date.today()
    print "today:" + today.strftime("%Y-%m-%d")

    upload_client = create_gd_upload_client()
    try:
        login_gd_client(upload_client, [USER_ID], [PASSWORD])
        print "login done.."
        upload_file(
            upload_client, 
            [FILE_PATH], 
            [TITLE_AT_GOOGLE_DOCS])
    except gdata.client.BadAuthentication:
        print "login error...."
        res = 9
    except:
        print "Unexpected error:", sys.exc_info()[0]
        res = 9
    return res

if __name__ == "__main__":
    print "start"
    res = main()
    if res != 0:
        print "ERROE END !!"
        sys.exit(res)
    print "process done.."
    sys.exit(0)

prototype.
for backup data files to GoogleDocs..

need
gdata-python-client:
http://code.google.com/p/gdata-python-client/

https://developers.google.com/google-apps/documents-list/