python - 在 Python 上为 Django 实现 Youtube API v3 时出现问题(错误 : 'unicode' object has no attribute 'video' ))

Question

我正在尝试使用 youtube Data API 将文件上传到我的 YouTube channel

这是我的上传操作

videos/views.py

def upload(request):
    """
    Upload video
    :param request:
    """

    context = RequestContext(request)

    if request.method == 'POST':
        # do the following
        form_upload = VideoForm(request.POST, request.FILES)

        if form_upload.is_valid():
            uploaded_video = form_upload.save(commit=True)
            uploaded_video.category = 23
            uploaded_video.privacyStatus = 'public'

            # send this file to youtube
            initialize_upload(uploaded_video.file_on_server.path, uploaded_video)

            messages.success(request, 'Video saved.')
        else:
            messages.error(request, 'Ooops.')

    else:
        form_upload = VideoForm(instance=request.user)

    context_dict = {'form_upload': form_upload}

    return render_to_response('videos/upload.html', context_dict, context)

这是 Python 示例 provide by google.

#!/usr/bin/python

import httplib
import httplib2
import os
import random
import sys
import time

from apiclient.discovery import build
from apiclient.errors import HttpError
from apiclient.http import MediaFileUpload
from oauth2client.client import flow_from_clientsecrets
from oauth2client.file import Storage
from oauth2client.tools import argparser, run_flow


# Explicitly tell the underlying HTTP transport library not to retry, since
# we are handling retry logic ourselves.
httplib2.RETRIES = 1

# Maximum number of times to retry before giving up.
MAX_RETRIES = 10

# Always retry when these exceptions are raised.
RETRIABLE_EXCEPTIONS = (httplib2.HttpLib2Error, IOError, httplib.NotConnected,
  httplib.IncompleteRead, httplib.ImproperConnectionState,
  httplib.CannotSendRequest, httplib.CannotSendHeader,
  httplib.ResponseNotReady, httplib.BadStatusLine)

# Always retry when an apiclient.errors.HttpError with one of these status
# codes is raised.
RETRIABLE_STATUS_CODES = [500, 502, 503, 504]

# The CLIENT_SECRETS_FILE variable specifies the name of a file that contains
# the OAuth 2.0 information for this application, including its client_id and
# client_secret. You can acquire an OAuth 2.0 client ID and client secret from
# the Google Developers Console at
# https://console.developers.google.com/.
# Please ensure that you have enabled the YouTube Data API for your project.
# For more information about using OAuth2 to access the YouTube Data API, see:
#   https://developers.google.com/youtube/v3/guides/authentication
# For more information about the client_secrets.json file format, see:
#   https://developers.google.com/api-client-library/python/guide/aaa_client_secrets
CLIENT_SECRETS_FILE = "client_secrets.json"

# This OAuth 2.0 access scope allows an application to upload files to the
# authenticated user's YouTube channel, but doesn't allow other types of access.
YOUTUBE_UPLOAD_SCOPE = "https://www.googleapis.com/auth/youtube.upload"
YOUTUBE_API_SERVICE_NAME = "youtube"
YOUTUBE_API_VERSION = "v3"

# This variable defines a message to display if the CLIENT_SECRETS_FILE is
# missing.
MISSING_CLIENT_SECRETS_MESSAGE = """
WARNING: Please configure OAuth 2.0

To make this sample run you will need to populate the client_secrets.json file
found at:

   %s

with information from the Developers Console
https://console.developers.google.com/

For more information about the client_secrets.json file format, please visit:
https://developers.google.com/api-client-library/python/guide/aaa_client_secrets
""" % os.path.abspath(os.path.join(os.path.dirname(__file__),
                                   CLIENT_SECRETS_FILE))

VALID_PRIVACY_STATUSES = ("public", "private", "unlisted")


def get_authenticated_service(args):
  flow = flow_from_clientsecrets(CLIENT_SECRETS_FILE,
    scope=YOUTUBE_UPLOAD_SCOPE,
    message=MISSING_CLIENT_SECRETS_MESSAGE)

  storage = Storage("%s-oauth2.json" % sys.argv[0])
  credentials = storage.get()

  if credentials is None or credentials.invalid:
    credentials = run_flow(flow, storage, args)

  return build(YOUTUBE_API_SERVICE_NAME, YOUTUBE_API_VERSION,
    http=credentials.authorize(httplib2.Http()))

def initialize_upload(youtube, options):
  tags = None
  if options.keywords:
    tags = options.keywords.split(",")

  body=dict(
    snippet=dict(
      title=options.title,
      description=options.description,
      tags=tags,
      categoryId=options.category
    ),
    status=dict(
      privacyStatus=options.privacyStatus
    )
  )

  # Call the API's videos.insert method to create and upload the video.
  insert_request = youtube.videos().insert(
    part=",".join(body.keys()),
    body=body,
    # The chunksize parameter specifies the size of each chunk of data, in
    # bytes, that will be uploaded at a time. Set a higher value for
    # reliable connections as fewer chunks lead to faster uploads. Set a lower
    # value for better recovery on less reliable connections.
    #
    # Setting "chunksize" equal to -1 in the code below means that the entire
    # file will be uploaded in a single HTTP request. (If the upload fails,
    # it will still be retried where it left off.) This is usually a best
    # practice, but if you're using Python older than 2.6 or if you're
    # running on App Engine, you should set the chunksize to something like
    # 1024 * 1024 (1 megabyte).
    media_body=MediaFileUpload(options.file, chunksize=-1, resumable=True)
  )

  resumable_upload(insert_request)

# This method implements an exponential backoff strategy to resume a
# failed upload.
def resumable_upload(insert_request):
  response = None
  error = None
  retry = 0
  while response is None:
    try:
      print "Uploading file..."
      status, response = insert_request.next_chunk()
      if 'id' in response:
        print "Video id '%s' was successfully uploaded." % response['id']
      else:
        exit("The upload failed with an unexpected response: %s" % response)
    except HttpError, e:
      if e.resp.status in RETRIABLE_STATUS_CODES:
        error = "A retriable HTTP error %d occurred:\n%s" % (e.resp.status,
                                                             e.content)
      else:
        raise
    except RETRIABLE_EXCEPTIONS, e:
      error = "A retriable error occurred: %s" % e

    if error is not None:
      print error
      retry += 1
      if retry > MAX_RETRIES:
        exit("No longer attempting to retry.")

      max_sleep = 2 ** retry
      sleep_seconds = random.random() * max_sleep
      print "Sleeping %f seconds and then retrying..." % sleep_seconds
      time.sleep(sleep_seconds)

if __name__ == '__main__':
  argparser.add_argument("--file", required=True, help="Video file to upload")
  argparser.add_argument("--title", help="Video title", default="Test Title")
  argparser.add_argument("--description", help="Video description",
    default="Test Description")
  argparser.add_argument("--category", default="22",
    help="Numeric video category. " +
      "See https://developers.google.com/youtube/v3/docs/videoCategories/list")
  argparser.add_argument("--keywords", help="Video keywords, comma separated",
    default="")
  argparser.add_argument("--privacyStatus", choices=VALID_PRIVACY_STATUSES,
    default=VALID_PRIVACY_STATUSES[0], help="Video privacy status.")
  args = argparser.parse_args()

  if not os.path.exists(args.file):
    exit("Please specify a valid file using the --file= parameter.")

  youtube = get_authenticated_service(args)
  try:
    initialize_upload(youtube, args)
  except HttpError, e:
    print "An HTTP error %d occurred:\n%s" % (e.resp.status, e.content)

但我收到以下错误消息:

  AttributeError at /videos/upload
'unicode' object has no attribute 'videos'
Request Method: POST
Request URL:    http://127.0.0.1:8000/videos/upload
Django Version: 1.7.2
Exception Type: AttributeError
Exception Value:    
'unicode' object has no attribute 'videos'
Exception Location: /home/ymorin007/workspace/sites/humor15.com/src/videos/upload_video.py in initialize_upload, line 108
Python Executable:  /home/ymorin007/.virtualenvs/humor15/bin/python2.7
Python Version: 2.7.6
Python Path:    
['/home/ymorin007/workspace/sites/humor15.com/src',
 '/home/ymorin007/Softwares/pycharm-4.0/helpers/pydev',
 '/home/ymorin007/workspace/sites/humor15.com/src',
 '/home/ymorin007/.virtualenvs/humor15/lib/python2.7',
 '/home/ymorin007/.virtualenvs/humor15/lib/python2.7/plat-x86_64-linux-gnu',
 '/home/ymorin007/.virtualenvs/humor15/lib/python2.7/lib-tk',
 '/home/ymorin007/.virtualenvs/humor15/lib/python2.7/lib-old',
 '/home/ymorin007/.virtualenvs/humor15/lib/python2.7/lib-dynload',
 '/usr/lib/python2.7',
 '/usr/lib/python2.7/plat-x86_64-linux-gnu',
 '/usr/lib/python2.7/lib-tk',
 '/home/ymorin007/.virtualenvs/humor15/local/lib/python2.7/site-packages']
Server time:    Wed, 21 Jan 2015 15:33:22 -0400
Traceback Switch to copy-and-paste view

/home/ymorin007/.virtualenvs/humor15/local/lib/python2.7/site-packages/django/core/handlers/base.py in get_response
                    response = wrapped_callback(request, *callback_args, **callback_kwargs) ...
▶ Local vars
/home/ymorin007/.virtualenvs/humor15/local/lib/python2.7/site-packages/django/contrib/auth/decorators.py in _wrapped_view
                return view_func(request, *args, **kwargs) ...
▶ Local vars
/home/ymorin007/workspace/sites/humor15.com/src/videos/views.py in upload
            initialize_upload(uploaded_video.file_on_server.path, uploaded_video) ...
▶ Local vars
/home/ymorin007/workspace/sites/humor15.com/src/videos/upload_video.py in initialize_upload
  insert_request = youtube.videos().insert( ...
▶ Local vars

我找不到此错误的任何解释。任何帮助，将不胜感激。谢谢。

顺便说一句。这是我第一次使用 Python 和 youtube Data API。

Answer 1

回溯告诉您您正在尝试在 unicode(字符串)对象上调用不受支持的方法。这似乎是views.py 中这一行的结果:

initialize_upload(uploaded_video.file_on_server.path, uploaded_video)

以下是示例所示的内容:

 youtube = get_authenticated_service(args)
 try:
    initialize_upload(youtube, args)

看来您需要将此函数传递给您的服务对象的实例，而不是上传视频的路径。