feat: remove python 3.6 support (#689)

* remove python 3.6 support

* few more things

* try deleting kokoro python3.6 samples

README.rst

@@ -43,7 +43,7 @@ Installation
 `venv`_ is a tool to create isolated Python environments. The basic problem it
 addresses is one of dependencies and versions, and indirectly permissions.
 
-Make sure you're using Python 3.3 or later, which includes `venv`_ by default.
+Make sure you're using Python 3.7 or later, which includes `venv`_ by default.
 With `venv`, it's possible to install this library without needing system
 install permissions, and without clashing with the installed system
 dependencies.
@@ -54,14 +54,17 @@ dependencies.
 
 Supported Python Versions
 ^^^^^^^^^^^^^^^^^^^^^^^^^
-Python >= 3.6
+Python >= 3.7
 
 Deprecated Python Versions
 ^^^^^^^^^^^^^^^^^^^^^^^^^^
-Python == 2.7: Python 2.7 support will be removed sometime after January 1, 2020.
 
 Unsupported Python Versions
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Python == 3.6: the last released version which supported Python 3.6 was
+``google-cloud-storage 2.0.0``, released 2022-01-12.
+
 Python == 3.5: the last released version which supported Python 3.5 was
 ``google-cloud-storage 1.32.0``, released 2020-10-16.
 

noxfile.py

@@ -29,7 +29,7 @@
 
 DEFAULT_PYTHON_VERSION = "3.8"
 SYSTEM_TEST_PYTHON_VERSIONS = ["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"]
 CONFORMANCE_TEST_PYTHON_VERSIONS = ["3.8"]
 
 _DEFAULT_STORAGE_HOST = "https://storage.googleapis.com"

owlbot.py

@@ -26,7 +26,7 @@
 templated_files = common.py_library(
     cov_level=100,
     split_system_tests=True,
-    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"],
     system_test_external_dependencies=[
         "google-cloud-iam",
         "google-cloud-pubsub < 2.0.0",

samples/snippets/noxfile_config.py

@@ -72,7 +72,7 @@ def get_cloud_kms_key():
 
 TEST_CONFIG_OVERRIDE = {
     # You can opt out from the test for specific Python versions.
-    'ignored_versions': ["2.7"],
+    'ignored_versions': ["2.7", "3.6"],
 
     # An envvar key for determining the project id to use. Change it
     # to 'BUILD_SPECIFIC_GCLOUD_PROJECT' if you want to opt in using a

setup.py

@@ -78,7 +78,6 @@
         "License :: OSI Approved :: Apache Software License",
         "Programming Language :: Python",
         "Programming Language :: Python :: 3",
-        "Programming Language :: Python :: 3.6",
         "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",
@@ -91,7 +90,7 @@
     namespace_packages=namespaces,
     install_requires=dependencies,
     extras_require=extras,
-    python_requires=">=3.6",
+    python_requires=">=3.7",
     include_package_data=True,
     zip_safe=False,
 )