BigQuery Storage: Pin black version. (via synth).

[yoshi-automation]

This PR was generated using Autosynth. 🌈

Here's the log from Synthtool:

synthtool > Executing /tmpfs/src/git/autosynth/working_repo/bigquery_storage/synth.py. synthtool > Ensuring dependencies. synthtool > Pulling artman image. latest: Pulling from googleapis/artman Digest: sha256:63f21e83cb92680b7001dc381069e962c9e6dee314fd8365ac554c07c89221fb Status: Image is up to date for googleapis/artman:latest synthtool > Cloning googleapis. synthtool > Running generator for google/cloud/bigquery/storage/artman_bigquerystorage_v1beta1.yaml. synthtool > Generated code into /home/kbuilder/.cache/synthtool/googleapis/artman-genfiles/python/bigquerystorage-v1beta1. synthtool > Copy: /home/kbuilder/.cache/synthtool/googleapis/google/cloud/bigquery/storage/v1beta1/avro.proto to /home/kbuilder/.cache/synthtool/googleapis/artman-genfiles/python/bigquerystorage-v1beta1/google/cloud/bigquery_storage_v1beta1/proto/avro.proto synthtool > Copy: /home/kbuilder/.cache/synthtool/googleapis/google/cloud/bigquery/storage/v1beta1/table_reference.proto to /home/kbuilder/.cache/synthtool/googleapis/artman-genfiles/python/bigquerystorage-v1beta1/google/cloud/bigquery_storage_v1beta1/proto/table_reference.proto synthtool > Copy: /home/kbuilder/.cache/synthtool/googleapis/google/cloud/bigquery/storage/v1beta1/arrow.proto to /home/kbuilder/.cache/synthtool/googleapis/artman-genfiles/python/bigquerystorage-v1beta1/google/cloud/bigquery_storage_v1beta1/proto/arrow.proto synthtool > Copy: /home/kbuilder/.cache/synthtool/googleapis/google/cloud/bigquery/storage/v1beta1/storage.proto to /home/kbuilder/.cache/synthtool/googleapis/artman-genfiles/python/bigquerystorage-v1beta1/google/cloud/bigquery_storage_v1beta1/proto/storage.proto synthtool > Copy: /home/kbuilder/.cache/synthtool/googleapis/google/cloud/bigquery/storage/v1beta1/read_options.proto to /home/kbuilder/.cache/synthtool/googleapis/artman-genfiles/python/bigquerystorage-v1beta1/google/cloud/bigquery_storage_v1beta1/proto/read_options.proto synthtool > Placed proto files into /home/kbuilder/.cache/synthtool/googleapis/artman-genfiles/python/bigquerystorage-v1beta1/google/cloud/bigquery_storage_v1beta1/proto. synthtool > Replaced 'from google.cloud.bigquery.storage_v1beta1.proto' in google/cloud/bigquery_storage_v1beta1/proto/storage_pb2.py. synthtool > Replaced 'from google.cloud.bigquery.storage_v1beta1.proto' in google/cloud/bigquery_storage_v1beta1/proto/storage_pb2_grpc.py. synthtool > Replaced 'google-cloud-bigquerystorage' in google/cloud/bigquery_storage_v1beta1/gapic/big_query_storage_client.py. synthtool > Replaced 'import google.api_core.gapic_v1.method\n' in google/cloud/bigquery_storage_v1beta1/gapic/big_query_storage_client.py. synthtool > Replaced 'from google.cloud import bigquery_storage_v1beta1' in tests/unit/gapic/v1beta1/test_big_query_storage_client_v1beta1.py. synthtool > Replaced 'bigquery_storage_v1beta1.BigQueryStorageClient' in tests/unit/gapic/v1beta1/test_big_query_storage_client_v1beta1.py. synthtool > Replaced 'return google.api_core.grpc_helpers.create_channel\\(\n(\\s+)address,\n\\s+credentials=.*,\n\\s+scopes=.*,\n' in google/cloud/bigquery_storage_v1beta1/gapic/transports/big_query_storage_grpc_transport.py. synthtool > Replaced 'if transport:' in google/cloud/bigquery_storage_v1beta1/gapic/big_query_storage_client.py. synthtool > No replacements made in ['google/cloud/bigquery_storage_v1beta1/gapic/big_query_storage_client.py'] for pattern to_grpc_metadata\(\n, maybe replacement is not longer needed? synthtool > Replaced 'metadata.append\\(routing_metadata\\)' in google/cloud/bigquery_storage_v1beta1/gapic/big_query_storage_client.py. synthtool > Replaced 'if channel is not None and credentials is not None:' in google/cloud/bigquery_storage_v1beta1/gapic/transports/big_query_storage_grpc_transport.py. synthtool > Replaced 'if channel is None:' in google/cloud/bigquery_storage_v1beta1/gapic/transports/big_query_storage_grpc_transport.py. synthtool > Replaced 'google.api_core.grpc_helpers.create_channel\\(' in google/cloud/bigquery_storage_v1beta1/gapic/transports/big_query_storage_grpc_transport.py. .coveragerc .flake8 MANIFEST.in noxfile.py.j2 setup.cfg Running session blacken Creating virtualenv using python3.6 in .nox/blacken pip install black==19.3b0 black docs google tests noxfile.py setup.py samples reformatted /tmpfs/src/git/autosynth/working_repo/bigquery_storage/google/cloud/__init__.py reformatted /tmpfs/src/git/autosynth/working_repo/bigquery_storage/google/__init__.py reformatted /tmpfs/src/git/autosynth/working_repo/bigquery_storage/google/cloud/bigquery_storage.py reformatted /tmpfs/src/git/autosynth/working_repo/bigquery_storage/google/cloud/bigquery_storage_v1beta1/gapic/enums.py reformatted /tmpfs/src/git/autosynth/working_repo/bigquery_storage/google/cloud/bigquery_storage_v1beta1/gapic/big_query_storage_client_config.py reformatted /tmpfs/src/git/autosynth/working_repo/bigquery_storage/google/cloud/bigquery_storage_v1beta1/proto/arrow_pb2_grpc.py reformatted /tmpfs/src/git/autosynth/working_repo/bigquery_storage/google/cloud/bigquery_storage_v1beta1/gapic/transports/big_query_storage_grpc_transport.py reformatted /tmpfs/src/git/autosynth/working_repo/bigquery_storage/google/cloud/bigquery_storage_v1beta1/proto/avro_pb2_grpc.py reformatted /tmpfs/src/git/autosynth/working_repo/bigquery_storage/google/cloud/bigquery_storage_v1beta1/proto/avro_pb2.py reformatted /tmpfs/src/git/autosynth/working_repo/bigquery_storage/google/cloud/bigquery_storage_v1beta1/proto/read_options_pb2_grpc.py reformatted /tmpfs/src/git/autosynth/working_repo/bigquery_storage/google/cloud/bigquery_storage_v1beta1/proto/arrow_pb2.py reformatted /tmpfs/src/git/autosynth/working_repo/bigquery_storage/google/cloud/bigquery_storage_v1beta1/proto/read_options_pb2.py reformatted /tmpfs/src/git/autosynth/working_repo/bigquery_storage/google/cloud/bigquery_storage_v1beta1/gapic/big_query_storage_client.py reformatted /tmpfs/src/git/autosynth/working_repo/bigquery_storage/google/cloud/bigquery_storage_v1beta1/proto/table_reference_pb2_grpc.py reformatted /tmpfs/src/git/autosynth/working_repo/bigquery_storage/google/cloud/bigquery_storage_v1beta1/proto/storage_pb2_grpc.py reformatted /tmpfs/src/git/autosynth/working_repo/bigquery_storage/google/cloud/bigquery_storage_v1beta1/types.py reformatted /tmpfs/src/git/autosynth/working_repo/bigquery_storage/google/cloud/bigquery_storage_v1beta1/proto/table_reference_pb2.py reformatted /tmpfs/src/git/autosynth/working_repo/bigquery_storage/noxfile.py reformatted /tmpfs/src/git/autosynth/working_repo/bigquery_storage/tests/unit/gapic/v1beta1/test_big_query_storage_client_v1beta1.py reformatted /tmpfs/src/git/autosynth/working_repo/bigquery_storage/google/cloud/bigquery_storage_v1beta1/proto/storage_pb2.py All done! ✨ 🍰 ✨ 20 files reformatted, 15 files left unchanged. Session blacken was successful. synthtool > Cleaned up 2 temporary directories. synthtool > Wrote metadata to synth.metadata. 

Failing CI.

[tseaver]

The "BigQuery Storage" Kokoro failure is quite puzzling: every job fails with:

ImportError while importing test module '/tmpfs/src/github/google-cloud-python/bigquery_storage/tests/unit/test_reader.py'. Hint: make sure your test modules/packages have valid Python names. Traceback: tests/unit/test_reader.py:22: in <module> import fastavro .nox/unit-2-7/lib/python2.7/site-packages/fastavro/__init__.py:47: in <module> import fastavro.read .nox/unit-2-7/lib/python2.7/site-packages/fastavro/read.py:4: in <module> from . import _read_py as _read .nox/unit-2-7/lib/python2.7/site-packages/fastavro/_read_py.py:11: in <module> import bz2 E ImportError: No module named bz2

Which is absurd, given that bz2 is in the standard library.