Python 3.9 support

[anisf]

TL;DR

Getting error when trying to install gcloud sdk using python 3.9.0 Expected behavior Successfully installed gcloud sdk

Observed behavior

Traceback (most recent call last):
  File "/opt/hostedtoolcache/gcloud/314.0.0/x64/lib/gcloud.py", line 104, in <module>
    main()
  File "/opt/hostedtoolcache/gcloud/314.0.0/x64/lib/gcloud.py", line 62, in main
    from googlecloudsdk.core.util import encoding
  File "/opt/hostedtoolcache/gcloud/314.0.0/x64/lib/googlecloudsdk/__init__.py", line 23, in <module>
    from googlecloudsdk.core.util import importing
  File "/opt/hostedtoolcache/gcloud/314.0.0/x64/lib/googlecloudsdk/core/util/importing.py", line 23, in <module>
    import imp
  File "/opt/hostedtoolcache/Python/3.9.0/x64/lib/python3.9/imp.py", line 23, in <module>
    from importlib import util
  File "/opt/hostedtoolcache/Python/3.9.0/x64/lib/python3.9/importlib/util.py", line 2, in <module>
    from . import abc
  File "/opt/hostedtoolcache/Python/3.9.0/x64/lib/python3.9/importlib/abc.py", line 17, in <module>
    from typing import Protocol, runtime_checkable
  File "/opt/hostedtoolcache/Python/3.9.0/x64/lib/python3.9/typing.py", line 26, in <module>
    import re as stdlib_re  # Avoid confusion with the re we export.
  File "/opt/hostedtoolcache/Python/3.9.0/x64/lib/python3.9/re.py", line 124, in <module>
    import enum
  File "/opt/hostedtoolcache/gcloud/314.0.0/x64/lib/third_party/enum/__init__.py", line 26, in <module>
    spec = importlib.util.find_spec('enum')
AttributeError: module 'importlib' has no attribute 'util'
Error: The process '/opt/hostedtoolcache/gcloud/314.0.0/x64/bin/gcloud' failed with exit code 1

Reproduction

Action YAML

jobs:
  build:
    runs-on: ubuntu-latest
    strategy:
    steps:
      - name: Git checkout
        uses: actions/checkout@v2

      - name: Set up Python 3.9
        uses: actions/setup-python@v2
        with:
          python-version: 3.9

      - name: Setup gcloud environment
        uses: GoogleCloudPlatform/github-actions/setup-gcloud@master
        with:
          project_id: <project_id>
          service_account_key: <sa_key>

[bharathkkb]

@anisf thanks for the report. This seems like a known gcloud incompatibility. Tracking here: https://issuetracker.google.com/issues/169249645

[sethvargo]

Closing as the issue has been fixed upstream in 319.0.0+: https://b.corp.google.com/issues/170125513