fix: remove Python 3.7 support due to EOL (#900)

* chore: Remove Python 3.7 support due to EOL

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

* additional changes to remove Python 3.7

* checking owlbot.py changes without snippets

* manually removing '3.7' from samples/snippets noxfile

* adding back samples templates in owlbot.py

* removing kokoro Python 3.7 sample tests

* reverting changes, making changes in g3 first

* testing with g3 updates

* removing 3.7 from settings yaml file

* adding back reverted changes

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

* reverting owlbot changes

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

---------

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>

Author: nayaknishant

CONTRIBUTING.rst

@@ -22,7 +22,7 @@ In order to add a feature:
   documentation.
 
 - The feature must work fully on the following CPython versions:
-  3.7, 3.8, 3.9, 3.10 and 3.11 on both UNIX and Windows.
+  3.8, 3.9, 3.10 and 3.11 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 3.7`_
 -  `Python 3.8`_
 -  `Python 3.9`_
 -  `Python 3.10`_
 -  `Python 3.11`_
 
-.. _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/
 .. _Python 3.10: https://docs.python.org/3.10/
@@ -239,7 +237,7 @@ Supported versions can be found in our ``noxfile.py`` `config`_.
 .. _config: https://github.com/googleapis/python-bigquery-sqlalchemy/blob/main/noxfile.py
 
 
-We also explicitly decided to support Python 3 beginning with version 3.7.
+We also explicitly decided to support Python 3 beginning with version 3.8.
 Reasons for this include:
 
 -  Encouraging use of newest versions of Python 3

README.rst

@@ -53,11 +53,11 @@ dependencies.
 
 Supported Python Versions
 ^^^^^^^^^^^^^^^^^^^^^^^^^
-Python >= 3.7
+Python >= 3.8
 
 Unsupported Python Versions
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
-Python <= 3.6.
+Python <= 3.7.
 
 
 Mac/Linux

noxfile.py

@@ -33,7 +33,7 @@
 
 DEFAULT_PYTHON_VERSION = "3.8"
 
-UNIT_TEST_PYTHON_VERSIONS = ["3.7", "3.8", "3.9", "3.10", "3.11"]
+UNIT_TEST_PYTHON_VERSIONS = ["3.8", "3.9", "3.10", "3.11"]
 UNIT_TEST_STANDARD_DEPENDENCIES = [
     "mock",
     "asyncmock",

owlbot.py

@@ -33,7 +33,7 @@
     "3.11": ["tests", "geography", "bqstorage"],
 }
 templated_files = common.py_library(
-    unit_test_python_versions=["3.7", "3.8", "3.9", "3.10", "3.11"],
+    unit_test_python_versions=["3.8", "3.9", "3.10", "3.11"],
     system_test_python_versions=["3.8", "3.11"],
     cov_level=100,
     unit_test_extras=extras,
@@ -293,6 +293,7 @@ def system_noextras(session):
 # Samples templates
 # ----------------------------------------------------------------------------
 
+
 python.py_samples(skip_readmes=True)
 
 s.replace(

samples/snippets/requirements.txt

@@ -13,7 +13,6 @@ greenlet==2.0.2
 grpcio==1.57.0
 grpcio-status==1.57.0
 idna==3.4
-importlib-resources===5.12.0; python_version == '3.7'
 importlib-resources==6.0.1; python_version >= '3.8'
 mako==1.2.4
 markupsafe==2.1.3

setup.py

@@ -84,7 +84,6 @@ def readme():
         "License :: OSI Approved :: MIT License",
         "Programming Language :: Python",
         "Programming Language :: Python :: 3",
-        "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.10",
@@ -104,7 +103,7 @@ def readme():
         "sqlalchemy>=1.2.0,<2.0.0dev",
     ],
     extras_require=extras,
-    python_requires=">=3.7, <3.12",
+    python_requires=">=3.8, <3.12",
     tests_require=["packaging", "pytz"],
     entry_points={
         "sqlalchemy.dialects": ["bigquery = sqlalchemy_bigquery:BigQueryDialect"]