Remove Py3.6 support (#5818)

.github/workflows/build.yml

@@ -5,11 +5,10 @@ on: [push, pull_request]
 jobs:
   cache:
     name: Caching
-    # Change to ubuntu-latest after dropping Py3.6
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [ 3.6, 3.7, 3.8, 3.9, "3.10", "3.11" ]
+        python-version: [ 3.7, 3.8, 3.9, "3.10", "3.11" ]
 
     steps:
       - uses: actions/checkout@v3
@@ -42,7 +41,7 @@ jobs:
     needs: cache
     strategy:
       matrix:
-        python-version: [3.7]
+        python-version: [3.9]
     steps:
     - uses: actions/checkout@v3
     - name: Set up Python ${{ matrix.python-version }}
@@ -73,12 +72,12 @@ jobs:
 
   test:
     name: Unit test
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     needs: lint
     strategy:
       fail-fast: false
       matrix:
-        python-version: [3.6, 3.7, 3.8, 3.9, "3.10", "3.11"]
+        python-version: [3.7, 3.8, 3.9, "3.10", "3.11"]
 
     steps:
     - uses: actions/checkout@v3
@@ -117,12 +116,12 @@ jobs:
 
   testserver:
     name: Unit tests in Server Mode
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     needs: lint
     strategy:
       fail-fast: false
       matrix:
-        python-version: [3.6, 3.7, 3.8, 3.9, "3.10", "3.11"]
+        python-version: [3.7, 3.8, 3.9, "3.10", "3.11"]
 
     steps:
     - uses: actions/checkout@v3

codecov.yml

@@ -1,7 +1,7 @@
 codecov:
   notify:
     # Leave a GitHub comment after all builds have passed
-    after_n_builds: 12
+    after_n_builds: 10
 coverage:
   status:
     project:

moto/core/models.py

@@ -99,7 +99,7 @@ class BaseMockAWS:
                 try:
                     self.default_session_mock.stop()
                 except RuntimeError:
-                    # We only need to check for this exception in Python 3.6 and 3.7
+                    # We only need to check for this exception in Python 3.7
                     # https://bugs.python.org/issue36366
                     pass
                 self.unmock_env_variables()

moto/dynamodb/models/__init__.py

@@ -1351,8 +1351,6 @@ class DynamoDBBackend(BaseBackend):
                     gsi_to_create, table.table_key_attrs
                 )
 
-        # in python 3.6, dict.values() returns a dict_values object, but we expect it to be a list in other
-        # parts of the codebase
         table.global_indexes = list(gsis_by_name.values())
         return table
 

moto/iam/models.py

@@ -1,7 +1,6 @@
 import base64
 import os
 import string
-import sys
 from datetime import datetime
 import json
 import re
@@ -2399,10 +2398,7 @@ class IAMBackend(BaseBackend):
 
         # Validate the signing cert:
         try:
-            if sys.version_info < (3, 0):
-                data = bytes(body)
-            else:
-                data = bytes(body, "utf8")
+            data = bytes(body, "utf8")
 
             x509.load_pem_x509_certificate(data, default_backend())
 

setup.py

@@ -45,7 +45,6 @@ _dep_python_jose = "python-jose[cryptography]>=3.1.0,<4.0.0"
 _dep_python_jose_ecdsa_pin = (
     "ecdsa!=0.15"  # https://github.com/spulec/moto/pull/3263#discussion_r477404984
 )
-_dep_dataclasses = "dataclasses; python_version < '3.7'"
 _dep_docker = "docker>=2.5.1"
 _dep_graphql = "graphql-core"
 _dep_jsondiff = "jsondiff>=1.1.2"
@@ -96,7 +95,7 @@ extras_per_service.update(
         "ses": [],
         "sns": [],
         "sqs": [],
-        "ssm": [_dep_PyYAML, _dep_dataclasses],
+        "ssm": [_dep_PyYAML],
         # XRay module uses pkg_resources, but doesn't have an explicit
         # dependency listed.  This should be fixed in the next version:
         # https://github.com/aws/aws-xray-sdk-python/issues/305
@@ -137,7 +136,7 @@ setup(
     url="https://github.com/spulec/moto",
     entry_points={"console_scripts": ["moto_server = moto.server:main"]},
     packages=find_packages(exclude=("tests", "tests.*")),
-    python_requires=">=3.6",
+    python_requires=">=3.7",
     install_requires=install_requires,
     extras_require=extras_require,
     include_package_data=True,
@@ -145,7 +144,6 @@ setup(
     test_suite="tests",
     classifiers=[
         "Programming Language :: Python :: 3",
-        "Programming Language :: Python :: 3.6",
         "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",

tests/test_amp/test_amp_logging_config.py

@@ -1,5 +1,4 @@
 import boto3
-import sys
 import unittest
 from moto import mock_amp
 
@@ -7,10 +6,6 @@ from moto import mock_amp
 @mock_amp
 class TestAmpLoggingConfig(unittest.TestCase):
     def setUp(self) -> None:
-        if sys.version_info < (3, 7):
-            raise unittest.SkipTest(
-                "Cannot test this in Py3.6; outdated botocore dependencies do not yet support this feature"
-            )
         self.client = boto3.client("amp", region_name="us-east-2")
 
         workspace = self.client.create_workspace(alias="test", tags={"t": "v"})

tests/test_ec2/test_customer_gateways.py

@@ -1,11 +1,9 @@
 import boto3
 import pytest
 import sure  # noqa # pylint: disable=unused-import
-import sys
 
 from botocore.exceptions import ClientError
 from moto import mock_ec2
-from unittest import SkipTest
 
 
 @mock_ec2
@@ -21,11 +19,6 @@ def test_create_customer_gateways():
 
 @mock_ec2
 def test_create_customer_gateways_using_publicip_argument():
-    version_info = sys.version_info
-    if version_info.major == 3 and version_info.minor <= 6:
-        raise SkipTest(
-            "Py 3.6 has an older versions of botocore, and does not support the IpAddress-argument"
-        )
     ec2 = boto3.client("ec2", region_name="us-east-1")
 
     # The PublicIp-argument is deprecated, but should still be supported by Moto

tests/test_ec2/test_vpcs.py

@@ -5,7 +5,6 @@ import boto3
 
 import sure  # noqa # pylint: disable=unused-import
 import random
-import sys
 
 from moto import mock_ec2, settings
 from unittest import SkipTest
@@ -361,10 +360,6 @@ def test_vpc_get_by_tag_value_subset():
 
 @mock_ec2
 def test_default_vpc():
-    if sys.version_info < (3, 7):
-        raise SkipTest(
-            "Cannot test this in Py3.6; outdated botocore dependencies do not have all regions"
-        )
     ec2 = boto3.resource("ec2", region_name="us-west-1")
 
     # Create the default VPC
@@ -392,10 +387,6 @@ def test_default_vpc():
 
 @mock_ec2
 def test_non_default_vpc():
-    if sys.version_info < (3, 7):
-        raise SkipTest(
-            "Cannot test this in Py3.6; outdated botocore dependencies do not have all regions"
-        )
     ec2 = boto3.resource("ec2", region_name="us-west-1")
 
     # Create the default VPC - this already exists when backend instantiated!
@@ -512,10 +503,6 @@ def test_vpc_modify_enable_dns_hostnames():
 
 @mock_ec2
 def test_vpc_modify_enable_network_address_usage_metrics():
-    if sys.version_info < (3, 7):
-        raise SkipTest(
-            "Cannot test this in Py3.6; outdated botocore dependencies do not have all regions"
-        )
     ec2 = boto3.resource("ec2", region_name="us-west-1")
 
     # Create the default VPC

tests/test_efs/test_mount_target.py

@@ -1,5 +1,4 @@
 import re
-import sys
 from ipaddress import IPv4Network
 
 import pytest
@@ -10,31 +9,6 @@ from tests.test_efs.junk_drawer import has_status_code
 from . import fixture_ec2, fixture_efs  # noqa # pylint: disable=unused-import
 
 
-# Handle the fact that `subnet_of` is not a feature before 3.7.
-# Source for alternative version: https://github.com/python/cpython/blob/v3.7.0/Lib/ipaddress.py#L976
-# Discovered via: https://stackoverflow.com/questions/35115138/how-do-i-check-if-a-network-is-contained-in-another-network-in-python
-if sys.version_info.major >= 3 and sys.version_info.minor >= 7:
-
-    def is_subnet_of(a, b):
-        return a.subnet_of(b)
-
-else:
-
-    def is_subnet_of(a, b):
-        try:
-            # Always false if one is v4 and the other is v6.
-            if a._version != b._version:
-                raise TypeError(f"{a} and {b} are not of the same version")
-            return (
-                b.network_address <= a.network_address
-                and b.broadcast_address >= a.broadcast_address
-            )
-        except AttributeError:
-            raise TypeError(
-                f"Unable to test subnet containment " f"between {a} and {b}"
-            )
-
-
 @pytest.fixture(scope="function", name="file_system")
 def fixture_file_system(efs):
     create_fs_resp = efs.create_file_system(CreationToken="foobarbaz")
@@ -69,8 +43,8 @@ def test_create_mount_target_minimal_correct_use(efs, file_system, subnet):
     assert create_mt_resp["AvailabilityZoneName"] == subnet["AvailabilityZone"]
     assert create_mt_resp["VpcId"] == subnet["VpcId"]
     assert create_mt_resp["SubnetId"] == subnet_id
-    assert is_subnet_of(
-        IPv4Network(create_mt_resp["IpAddress"]), IPv4Network(subnet["CidrBlock"])
+    assert IPv4Network(create_mt_resp["IpAddress"]).subnet_of(
+        IPv4Network(subnet["CidrBlock"])
     )
     assert create_mt_resp["FileSystemId"] == file_system_id
     assert create_mt_resp["OwnerId"] == ACCOUNT_ID

tests/test_iam/test_iam.py

@@ -1,5 +1,4 @@
 import json
-import sys
 
 import boto3
 import csv
@@ -16,7 +15,6 @@ import pytest
 from datetime import datetime
 from uuid import uuid4
 from urllib import parse
-from unittest import SkipTest
 
 from moto.s3.responses import DEFAULT_REGION_NAME
 
@@ -3782,10 +3780,6 @@ def test_role_config_dict():
 @mock_iam
 @mock_config
 def test_role_config_client():
-    if sys.version_info < (3, 7):
-        raise SkipTest(
-            "Cannot test this in Py3.6; outdated botocore dependencies do not have all regions"
-        )
     from moto.iam.utils import random_role_id
 
     CONFIG_REGIONS = boto3.Session().get_available_regions("config")
@@ -4230,10 +4224,6 @@ def test_policy_config_dict():
 @mock_iam
 @mock_config
 def test_policy_config_client():
-    if sys.version_info < (3, 7):
-        raise SkipTest(
-            "Cannot test this in Py3.6; outdated botocore dependencies do not have all regions"
-        )
     from moto.iam.utils import random_policy_id
 
     CONFIG_REGIONS = boto3.Session().get_available_regions("config")