fix: require python 3.7+ (#304)

* chore(python): drop python 3.6 Source-Link: googleapis/synthtool@4f89b13 Post-Processor: gcr.io/cloud-devrel-public-resources/owlbot-python:latest@sha256:e7bb19d47c13839fe8c147e50e02e8b6cf5da8edd1af8b82208cd6f66cc2829c * add api_description to .repo-metadata.json * require python 3.7+ in setup.py * remove python 3.6 sample configs * 🦉 Updates from OwlBot post-processor See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md * exclude templated readme Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com> Co-authored-by: Maciej Strzelczyk <strzelczyk@google.com> Co-authored-by: Anthonios Partheniou <partheniou@google.com>

Author: 3 people

.github/.OwlBot.lock.yaml

@@ -13,5 +13,5 @@
 # limitations under the License.
 docker:
  image: gcr.io/cloud-devrel-public-resources/owlbot-python:latest
- digest: sha256:a5d81b61dfd1a432d3c03f51a25d2e71b37be24da509966d50724aea7c57c5c2
-# created: 2022-07-04T12:33:08.125873124Z
+ digest: sha256:e7bb19d47c13839fe8c147e50e02e8b6cf5da8edd1af8b82208cd6f66cc2829c
+# created: 2022-07-05T18:31:20.838186805Z

.github/workflows/unittest.yml

@@ -8,7 +8,7 @@ jobs:
  runs-on: ubuntu-latest
  strategy:
  matrix:
- python: ['3.6', '3.7', '3.8', '3.9', '3.10']
+ python: ['3.7', '3.8', '3.9', '3.10']
  steps:
  - name: Checkout
  uses: actions/checkout@v3

.kokoro/samples/python3.6/common.cfg

@@ -12,5 +12,6 @@
  "api_id": "compute.googleapis.com",
  "codeowner_team": "@googleapis/api-compute",
  "default_version": "v1",
- "api_shortname": "compute"
+ "api_shortname": "compute",
+ "api_description": "delivers virtual machines running in Google's innovative data centers and worldwide fiber network. Compute Engine's tooling and workflow support enable scaling from single instances to global, load-balanced cloud computing. Compute Engine's VMs boot quickly, come with persistent disk storage, deliver consistent performance and are available in many configurations."
 }

.kokoro/samples/python3.6/continuous.cfg

@@ -22,7 +22,7 @@ In order to add a feature:
  documentation.
 
 - The feature must work fully on the following CPython versions:
- 3.6, 3.7, 3.8, 3.9 and 3.10 on both UNIX and Windows.
+ 3.7, 3.8, 3.9 and 3.10 on both UNIX and Windows.
 
 - The feature must not add unnecessary dependencies (where
  "unnecessary" is of course subjective, but new dependencies should
@@ -221,13 +221,11 @@ Supported Python Versions
 
 We support:
 
-- `Python 3.6`_
 - `Python 3.7`_
 - `Python 3.8`_
 - `Python 3.9`_
 - `Python 3.10`_
 
-.. _Python 3.6: https://docs.python.org/3.6/
 .. _Python 3.7: https://docs.python.org/3.7/
 .. _Python 3.8: https://docs.python.org/3.8/
 .. _Python 3.9: https://docs.python.org/3.9/
@@ -239,7 +237,7 @@ Supported versions can be found in our ``noxfile.py`` `config`_.
 .. _config: https://github.com/googleapis/python-compute/blob/main/noxfile.py
 
 
-We also explicitly decided to support Python 3 beginning with version 3.6.
+We also explicitly decided to support Python 3 beginning with version 3.7.
 Reasons for this include:
 
 - Encouraging use of newest versions of Python 3

.kokoro/samples/python3.6/periodic-head.cfg

@@ -31,7 +31,7 @@
 
 DEFAULT_PYTHON_VERSION = "3.8"
 
-UNIT_TEST_PYTHON_VERSIONS = ["3.6", "3.7", "3.8", "3.9", "3.10"]
+UNIT_TEST_PYTHON_VERSIONS = ["3.7", "3.8", "3.9", "3.10"]
 UNIT_TEST_STANDARD_DEPENDENCIES = [
  "mock",
  "asyncmock",
@@ -331,28 +331,15 @@ def docfx(session):
 def prerelease_deps(session):
  """Run all tests with prerelease versions of dependencies installed."""
 
- prerel_deps = [
- "protobuf",
- "googleapis-common-protos",
- "google-auth",
- "grpcio",
- "grpcio-status",
- "google-api-core",
- "proto-plus",
- # dependencies of google-auth
- "cryptography",
- "pyasn1",
- ]
-
- for dep in prerel_deps:
- session.install("--pre", "--no-deps", "--upgrade", dep)
-
- # Remaining dependencies
- other_deps = ["requests"]
- session.install(*other_deps)
-
+ # Install all dependencies
+ session.install("-e", ".[all, tests, tracing]")
  session.install(*UNIT_TEST_STANDARD_DEPENDENCIES)
- session.install(*SYSTEM_TEST_STANDARD_DEPENDENCIES)
+ system_deps_all = (
+ SYSTEM_TEST_STANDARD_DEPENDENCIES
+ + SYSTEM_TEST_EXTERNAL_DEPENDENCIES
+ + SYSTEM_TEST_EXTRAS
+ )
+ session.install(*system_deps_all)
 
  # Because we test minimum dependency versions on the minimum Python
  # version, the first version we test with in the unit tests sessions has a
@@ -366,19 +353,44 @@ def prerelease_deps(session):
  constraints_text = constraints_file.read()
 
  # Ignore leading whitespace and comment lines.
- deps = [
+ constraints_deps = [
  match.group(1)
  for match in re.finditer(
  r"^\s*(\S+)(?===\S+)", constraints_text, flags=re.MULTILINE
  )
  ]
 
- # Don't overwrite prerelease packages.
- deps = [dep for dep in deps if dep not in prerel_deps]
- # We use --no-deps to ensure that pre-release versions aren't overwritten
- # by the version ranges in setup.py.
- session.install(*deps)
- session.install("--no-deps", "-e", ".[all]")
+ session.install(*constraints_deps)
+
+ if os.path.exists("samples/snippets/requirements.txt"):
+ session.install("-r", "samples/snippets/requirements.txt")
+
+ if os.path.exists("samples/snippets/requirements-test.txt"):
+ session.install("-r", "samples/snippets/requirements-test.txt")
+
+ prerel_deps = [
+ "protobuf",
+ # dependency of grpc
+ "six",
+ "googleapis-common-protos",
+ "grpcio",
+ "grpcio-status",
+ "google-api-core",
+ "proto-plus",
+ "google-cloud-testutils",
+ # dependencies of google-cloud-testutils"
+ "click",
+ ]
+
+ for dep in prerel_deps:
+ session.install("--pre", "--no-deps", "--upgrade", dep)
+
+ # Remaining dependencies
+ other_deps = [
+ "requests",
+ "google-auth",
+ ]
+ session.install(*other_deps)
 
  # Print out prerelease package versions
  session.run(
@@ -387,5 +399,16 @@ def prerelease_deps(session):
  session.run("python", "-c", "import grpc; print(grpc.__version__)")
 
  session.run("py.test", "tests/unit")
- session.run("py.test", "tests/system")
- session.run("py.test", "samples/snippets")
+
+ system_test_path = os.path.join("tests", "system.py")
+ system_test_folder_path = os.path.join("tests", "system")
+
+ # Only run system tests if found.
+ if os.path.exists(system_test_path) or os.path.exists(system_test_folder_path):
+ session.run("py.test", "tests/system")
+
+ snippets_test_path = os.path.join("samples", "snippets")
+
+ # Only run samples tests if found.
+ if os.path.exists(snippets_test_path):
+ session.run("py.test", "samples/snippets")