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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"ImportError: cannot import `six.moves.collections_abc`","articleBody":"- The PR \u003c/pull/34\u003e requires `six\u003e=1.13.0` and is in releases 1.4.2 \u0026 newer.\r\n- Any service using an older release of `six` will encounter this `ImportError`:\r\n```\r\nTraceback (most recent call last):\r\n    . . .\r\n  File \"/base/data/home/apps/m~PROJECT_ID/20201117t171012.431016593202024462/main.py\", line 16, in \u003cmodule\u003e\r\n    from google.cloud import ndb\r\n  File \"/base/data/home/apps/m~PROJECT_ID/20201117t171012.431016593202024462/lib/google/cloud/ndb/__init__.py\", line 28, in \u003cmodule\u003e\r\n    from google.cloud.ndb.client import Client\r\n  File \"/base/data/home/apps/m~PROJECT_ID/20201117t171012.431016593202024462/lib/google/cloud/ndb/client.py\", line 26, in \u003cmodule\u003e\r\n    from google.cloud.datastore_v1.gapic import datastore_client\r\n  File \"/base/data/home/apps/m~PROJECT_ID/20201117t171012.431016593202024462/lib/google/cloud/datastore_v1/__init__.py\", line 18, in \u003cmodule\u003e\r\n    from google.cloud.datastore_v1.gapic import datastore_client\r\n  File \"/base/data/home/apps/m~PROJECT_ID/20201117t171012.431016593202024462/lib/google/cloud/datastore_v1/gapic/datastore_client.py\", line 39, in \u003cmodule\u003e\r\n    from google.cloud.datastore.version import __version__\r\n  File \"/base/data/home/apps/m~PROJECT_ID/20201117t171012.431016593202024462/lib/google/cloud/datastore/__init__.py\", line 60, in \u003cmodule\u003e\r\n    from google.cloud.datastore.client import Client\r\n  File \"/base/data/home/apps/m~PROJECT_ID/20201117t171012.431016593202024462/lib/google/cloud/datastore/client.py\", line 26, in \u003cmodule\u003e\r\n    from google.cloud.datastore._http import HTTPDatastoreAPI\r\n  File \"/base/data/home/apps/m~PROJECT_ID/20201117t171012.431016593202024462/lib/google/cloud/datastore/_http.py\", line 19, in \u003cmodule\u003e\r\n    from google.cloud import _http as connection_module\r\n  File \"/base/data/home/apps/m~PROJECT_ID/20201117t171012.431016593202024462/lib/google/cloud/_http.py\", line 22, in \u003cmodule\u003e\r\n    from six.moves import collections_abc\r\nImportError: cannot import name collections_abc\r\n```\r\n- This affects all Python 2 App Engine users as [`six==1.12.0` is built-in](https://cloud.google.com/appengine/docs/standard/python/tools/built-in-libraries-27)\r\n- The current workaround is to reference the immediately preceding version by adding `google-cloud-core==1.4.1` in any affected application's `requirements.txt` file until either App Engine revs `six` to a newer release (\u003e=1.13.0), **or** [Line 22 of google/cloud/_http.py](https://github.com/googleapis/python-cloud-core/blob/master/google/cloud/_http.py#L22) is patched, perhaps with something like this:\r\n```\r\n# catch six\u003c1.13.0\r\ntry:\r\n    from six.moves import collections_abc\r\nexcept ImportError:\r\n    # catch python\u003c3.3.0\r\n    try:\r\n        import collections.abc as collections_abc # only works on 3.3+\r\n    except ImportError:\r\n        import collections as collections_abc\r\n```\r\n","author":{"url":"https://github.com/wescpy","@type":"Person","name":"wescpy"},"datePublished":"2020-11-18T02:37:10.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/45/python-cloud-core/issues/45"}