René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Infer project from credentials if not passed explicitly","articleBody":"Split off from #17\r\n\r\nSee also: https://github.com/googleapis/python-datastore/issues/74\r\nSee also: https://github.com/googleapis/python-storage/issues/177\r\n\r\nIn a \"blank slate\" design, I would argue that the credentials' project should supersede the one present in the environment.  However, for backward compatibility, we need to use the credentials' project only if the environment variable is not set.   So the order should follow the pattern from `google.auth.default` when inferring project ID:\r\n\r\n- Explicit project ID passed to client constructor\r\n- Project ID set in `GOOGLE_CLOUD_PROJECT` envvar\r\n- Project ID from credentials, if present\r\n- Project ID from SDK\r\n- Project ID from GAE\r\n- Project ID from GCE","author":{"url":"https://github.com/tseaver","@type":"Person","name":"tseaver"},"datePublished":"2020-09-16T20:34:52.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":2},"url":"https://github.com/27/python-cloud-core/issues/27"}