fix: require python 3.7+ (#468)

* chore(python): drop python 3.6 Source-Link: googleapis/synthtool@4f89b13 Post-Processor: gcr.io/cloud-devrel-public-resources/owlbot-python:latest@sha256:e7bb19d47c13839fe8c147e50e02e8b6cf5da8edd1af8b82208cd6f66cc2829c * require python 3.7+ in setup.py * remove python 3.6 sample configs Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com> Co-authored-by: Anthonios Partheniou <partheniou@google.com>

Author: gcf-owl-bot[bot]

.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:b2dc5f80edcf5d4486c39068c9fa11f7f851d9568eea4dcba130f994ea9b5e97
-# created: 2022-06-12T16:09:31.61859086Z
+ 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

@@ -33,7 +33,7 @@ export PYTHONUNBUFFERED=1
 env | grep KOKORO
 
 # Install nox
-python3.6 -m pip install --upgrade --quiet nox
+python3.9 -m pip install --upgrade --quiet nox
 
 # Use secrets acessor service account to get secrets
 if [[ -f "${KOKORO_GFILE_DIR}/secrets_viewer_service_account.json" ]]; then
@@ -76,7 +76,7 @@ for file in samples/**/requirements.txt; do
  echo "------------------------------------------------------------"
 
  # Use nox to execute the tests for the project.
- python3.6 -m nox -s "$RUN_TESTS_SESSION"
+ python3.9 -m nox -s "$RUN_TESTS_SESSION"
  EXIT=$?
 
  # If this is a periodic build, send the test log to the FlakyBot.

.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-bigquery-storage/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

@@ -1,22 +1,22 @@
-Python Client for BigQuery Storage API
-======================================
+Python Client for Google BigQuery Storage API
+=============================================
 
-|ga| |pypi| |versions| 
+|stable| |pypi| |versions|
 
-`BigQuery Storage API`_:
+`Google BigQuery Storage API`_: 
 
 - `Client Library Documentation`_
 - `Product Documentation`_
 
-.. |ga| image:: https://img.shields.io/badge/support-GA-gold.svg
- :target: https://github.com/googleapis/google-cloud-python/blob/main/README.rst#general-availability
+.. |stable| image:: https://img.shields.io/badge/support-stable-gold.svg
+ :target: https://github.com/googleapis/google-cloud-python/blob/main/README.rst#stability-levels
 .. |pypi| image:: https://img.shields.io/pypi/v/google-cloud-bigquery-storage.svg
  :target: https://pypi.org/project/google-cloud-bigquery-storage/
 .. |versions| image:: https://img.shields.io/pypi/pyversions/google-cloud-bigquery-storage.svg
  :target: https://pypi.org/project/google-cloud-bigquery-storage/
-.. _BigQuery Storage API: https://cloud.google.com/bigquery/docs/reference/storage/
+.. _Google BigQuery Storage API: https://cloud.google.com/bigquery/docs/reference/storage/
 .. _Client Library Documentation: https://cloud.google.com/python/docs/reference/bigquerystorage/latest
-.. _Product Documentation: https://cloud.google.com/bigquery/docs/reference/storage/
+.. _Product Documentation:  https://cloud.google.com/bigquery/docs/reference/storage/
 
 Quick Start
 -----------
@@ -25,12 +25,12 @@ In order to use this library, you first need to go through the following steps:
 
 1. `Select or create a Cloud Platform project.`_
 2. `Enable billing for your project.`_
-3. `Enable the BigQuery Storage API.`_
+3. `Enable the Google BigQuery Storage API.`_
 4. `Setup Authentication.`_
 
 .. _Select or create a Cloud Platform project.: https://console.cloud.google.com/project
 .. _Enable billing for your project.: https://cloud.google.com/billing/docs/how-to/modify-project#enable_billing_for_a_project
-.. _Enable the BigQuery Storage API.: https://console.cloud.google.com/apis/library/bigquerystorage.googleapis.com
+.. _Enable the Google BigQuery Storage API.:  https://cloud.google.com/bigquery/docs/reference/storage/
 .. _Setup Authentication.: https://googleapis.dev/python/google-api-core/latest/auth.html
 
 Installation
@@ -47,16 +47,25 @@ dependencies.
 .. _`virtualenv`: https://virtualenv.pypa.io/en/latest/
 
 
+Code samples and snippets
+~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Code samples and snippets live in the `samples/` folder.
+
+
 Supported Python Versions
 ^^^^^^^^^^^^^^^^^^^^^^^^^
-Python >= 3.6
+Our client libraries are compatible with all current [active](https://devguide.python.org/devcycle/#in-development-main-branch) and [maintenance](https://devguide.python.org/devcycle/#maintenance-branches) versions of
+Python.
+
+Python >= 3.7
 
 Unsupported Python Versions
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
-Python == 2.7, Python == 3.5.
+Python <= 3.6
 
-The last version of this library compatible with Python 2.7 and 3.5 is
-``google-cloud-bigquery-storage==1.1.0``.
+If you are using an [end-of-life](https://devguide.python.org/devcycle/#end-of-life-branches)
+version of Python, we recommend that you update as soon as possible to an actively supported version.
 
 
 Mac/Linux
@@ -80,37 +89,15 @@ Windows
  <your-env>\Scripts\activate
  <your-env>\Scripts\pip.exe install google-cloud-bigquery-storage
 
-Optional Dependencies
-^^^^^^^^^^^^^^^^^^^^^
-
-Several features of ``google-cloud-bigquery-storage`` require additional
-dependencies.
-
-* Parse Arrow blocks in a ``read_rows()`` stream using `pyarrow
- <https://arrow.apache.org/docs/python/>`_.
-
- ``pip install 'google-cloud-bigquery-storage[pyarrow]'``
- 
-
-* Parse Avro blocks in a ``read_rows()`` stream using `fastavro
- <https://fastavro.readthedocs.io/en/latest/>`_.
-
- ``pip install google-cloud-bigquery-storage[fastavro]``
-
-* Download rows to a `pandas <http://pandas.pydata.org/pandas-docs/stable/>`_
- dataframe.
-
- ``pip install 'google-cloud-bigquery-storage[pandas,pyarrow]'``
-
 Next Steps
 ~~~~~~~~~~
 
-- Read the `Client Library Documentation`_ for BigQuery Storage API
- API to see other available methods on the client.
-- Read the `BigQuery Storage API Product documentation`_ to learn
+- Read the `Client Library Documentation`_ for Google BigQuery Storage API
+ to see other available methods on the client.
+- Read the `Google BigQuery Storage API Product documentation`_ to learn
  more about the product and see How-to Guides.
-- View this `repository’s main README`_ to see the full list of Cloud
+- View this `README`_ to see the full list of Cloud
  APIs that we cover.
 
-.. _BigQuery Storage API Product documentation: https://cloud.google.com/bigquery/docs/reference/storage/
-.. _repository’s main README: https://github.com/googleapis/google-cloud-python/blob/main/README.rst
+.. _Google BigQuery Storage API Product documentation: https://cloud.google.com/bigquery/docs/reference/storage/
+.. _README: https://github.com/googleapis/google-cloud-python/blob/main/README.rst