René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Version 0.17 breaks GCS blob signing","articleBody":"When trying to update our project to use gcloud 0.17, we found one of our tests which uses the `generate_signed_url` for GCS blobs started failing with the following error:\n\n``` python\nproject/tests/common.py:302:\n_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _\nproject/gcs.py:159: in get_signed_url\n    return self._content.generate_signed_url(delta, method=method, content_type=content_type)\n../../../../.virtualenvs/project/lib/python2.7/site-packages/gcloud/storage/blob.py:239: in generate_signed_url\n    generation=generation)\n../../../../.virtualenvs/project/lib/python2.7/site-packages/gcloud/credentials.py:223: in generate_signed_url\n    string_to_sign)\n_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _\n\ncredentials = \u003coauth2client.client.GoogleCredentials object at 0x10f435690\u003e, expiration = 1467937858\nstring_to_sign = 'GET\\n\\napplication/json\\n1467937858\\n/project-test-hcpc74v437kuc-ops/file7jcwv4v437kuc'\n\n    def _get_signed_query_params(credentials, expiration, string_to_sign):\n        \"\"\"Gets query parameters for creating a signed URL.\n\n        :type credentials: :class:`oauth2client.client.AssertionCredentials`\n        :param credentials: The credentials used to create a private key\n                            for signing text.\n\n        :type expiration: int or long\n        :param expiration: When the signed URL should expire.\n\n        :type string_to_sign: string\n        :param string_to_sign: The string to be signed by the credentials.\n\n        :rtype: dict\n        :returns: Query parameters matching the signing credentials with a\n                  signed payload.\n        \"\"\"\n\u003e       _, signature_bytes = credentials.sign_blob(string_to_sign)\nE       AttributeError: 'GoogleCredentials' object has no attribute 'sign_blob'\n```\n","author":{"url":"https://github.com/dguaraglia","@type":"Person","name":"dguaraglia"},"datePublished":"2016-07-08T00:38:47.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":9},"url":"https://github.com/1964/google-cloud-python/issues/1964"}