chore: Remove support for python 2 (#173)

Author: farleyb-amazon

.github/workflows/ci_tests.yaml

@@ -9,46 +9,6 @@ on:
     - cron: '0 0 * * *'
 
 jobs:
-  # Hypothesis no longer supports Python 2 and
-  # there is a bug that appears with our slow tests
-  # only on Python 2.
-  # Until we also drop Python 2 support,
-  # the workaround is just that we don't run the slow tests
-  # on Python 2.
-  py2-tests:
-    runs-on: ${{ matrix.platform.os }}
-    strategy:
-      fail-fast: true
-      matrix:
-        platform:
-          - os: ubuntu-latest
-            architecture: x64
-          - os: windows-latest
-            architecture: x64
-          # x86 builds are only meaningful for Windows
-          - os: windows-latest
-            architecture: x86
-          - os: macos-latest
-            architecture: x64
-        category:
-          - local-fast
-    # These require credentials.
-    # Enable them once we sort how to provide them.
-    #          - integ-fast
-    #          - examples
-    steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-python@v1
-        with:
-          python-version: 2.7
-          architecture: ${{ matrix.platform.architecture }}
-      - run: |
-          python -m pip install --upgrade pip
-          pip install --upgrade -r ci-requirements.txt
-      - name: run test
-        env:
-          TOXENV: ${{ matrix.category }}
-        run: tox -- -vv
   tests:
     runs-on: ${{ matrix.platform.os }}
     strategy:
@@ -111,22 +71,3 @@ jobs:
         env:
           TOXENV: ${{ matrix.category }}
         run: tox -- -vv
-  upstream-py2:
-    runs-on: ubuntu-latest
-    strategy:
-      fail-fast: true
-      matrix:
-        category:
-          - test-upstream-requirements-py27
-    steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-python@v1
-        with:
-          python-version: 2.7
-      - run: |
-          python -m pip install --upgrade pip
-          pip install --upgrade -r ci-requirements.txt
-      - name: run test
-        env:
-          TOXENV: ${{ matrix.category }}
-        run: tox -- -vv

CHANGELOG.rst

@@ -2,6 +2,18 @@
 Changelog
 *********
 
+3.0.0 -- 2021-07-15
+===================
+
+Deprecation
+-----------
+The AWS DynamoDB Encryption Client for Python no longer supports Python 2 or Python 3.4
+as of major version 3.x; only Python 3.5+ is supported. Customers using Python 2
+or Python 3.4 can still use the 2.x line of the DynamoDB Encryption Client,
+which will continue to receive security updates for the next 12 months, in accordance
+with our `Support Policy <https://github.com/aws/aws-dynamodb-encryption-python/blob/master/SUPPORT_POLICY.rst>`__.
+
+
 2.1.0 -- 2021-07-15
 ===================
 

README.rst

@@ -47,12 +47,7 @@ Getting Started
 Required Prerequisites
 ======================
 
-* Python 2.7 or 3.4+
-
-  **NOTE: 2.x is the last major version of this library that will
-  support Python 2. Future major versions will begin to adopt changes
-  known to break Python 2. Python 3.4 support will also be removed
-  in future major versions; Python 3.5+ will be required.**
+* Python 3.5+
 
 
 Installation

SUPPORT_POLICY.rst

@@ -26,12 +26,12 @@ This table describes the current support status of each major version of the AWS
       - End of Support
       - 2022-07-08
     * - 2.x
-      - Generally Available
       - Maintenance
-      - 2021-07-13
+      - End of Support
+      - 2022-07-15
     * - 3.x
-      -
       - Generally Available
-      - 2021-07-13
+      -
+      -
 
 .. _AWS SDKs and Tools Maintenance Policy: https://docs.aws.amazon.com/sdkref/latest/guide/maint-policy.html#version-life-cycle

buildspec.yml

@@ -3,8 +3,6 @@ version: 0.2
 batch:
   fast-fail: false
   build-list:
-    - identifier: python2_7
-      buildspec: codebuild/python2.7.yml
     - identifier: python3_5
       buildspec: codebuild/python3.5.yml
     - identifier: python3_6

codebuild/python2.7.yml

@@ -1,4 +1,3 @@
 boto3>=1.4.4
 cryptography>=1.8.1
 attrs>=17.4.0
-enum34; python_version < '3.4'

requirements.txt

@@ -47,10 +47,7 @@ def get_requirements():
         "Natural Language :: English",
         "License :: OSI Approved :: Apache Software License",
         "Programming Language :: Python",
-        "Programming Language :: Python :: 2",
-        "Programming Language :: Python :: 2.7",
         "Programming Language :: Python :: 3",
-        "Programming Language :: Python :: 3.4",
         "Programming Language :: Python :: 3.5",
         "Programming Language :: Python :: 3.6",
         "Programming Language :: Python :: 3.7",

setup.py

@@ -14,7 +14,7 @@
 from enum import Enum
 
 __all__ = ("LOGGER_NAME", "CryptoAction", "EncryptionKeyType", "KeyEncodingType")
-__version__ = "2.1.0"
+__version__ = "3.0.0"
 
 LOGGER_NAME = "dynamodb_encryption_sdk"
 USER_AGENT_SUFFIX = "DynamodbEncryptionSdkPython/{}".format(__version__)

src/dynamodb_encryption_sdk/identifiers.py

@@ -1,6 +1,6 @@
 [tox]
 envlist =
-    py{27,35,36,37,38,39}-{local,integ,ddb,examples}-fast,
+    py{35,36,37,38,39}-{local,integ,ddb,examples}-fast,
     nocmk, sourcebuildcheck,
     docs, bandit, doc8, readme,
     flake8{,-tests,-examples}, pylint{,-tests,-examples},
@@ -117,15 +117,6 @@ recreate = True
 deps =
 commands = {toxinidir}/test/freeze-upstream-requirements.sh
 
-# Freeze for Python 2.7
-[testenv:freeze-upstream-requirements-py27]
-basepython = python2.7
-sitepackages = {[testenv:freeze-upstream-requirements-base]sitepackages}
-skip_install = {[testenv:freeze-upstream-requirements-base]skip_install}
-recreate = {[testenv:freeze-upstream-requirements-base]recreate}
-deps = {[testenv:freeze-upstream-requirements-base]deps}
-commands = {[testenv:freeze-upstream-requirements-base]commands} test/upstream-requirements-py27.txt
-
 # Freeze for Python 3.7
 [testenv:freeze-upstream-requirements-py37]
 basepython = python3.7
@@ -142,15 +133,6 @@ recreate = True
 passenv =
 commands = {[testenv:base-command]commands} -m "local and not slow and not veryslow and not nope" --ignore=examples
 
-# Test frozen upstream requirements for Python 2.7
-[testenv:test-upstream-requirements-py27]
-basepython = python2.7
-passenv =
-deps = -rtest/upstream-requirements-py27.txt
-sitepackages = {[testenv:test-upstream-requirements-base]sitepackages}
-recreate = {[testenv:test-upstream-requirements-base]recreate}
-commands = {[testenv:test-upstream-requirements-base]commands}
-
 # Test frozen upstream requirements for Python 3.7
 [testenv:test-upstream-requirements-py37]
 basepython = python3.7
@@ -201,17 +183,6 @@ commands =
         {posargs}
     {[testenv:mypy-coverage]commands}
 
-[testenv:mypy-py2]
-basepython = python2.7
-deps = {[testenv:mypy-common]deps}
-commands =
-    python -m mypy \
-        --py2 \
-        --linecoverage-report build \
-        src/dynamodb_encryption_sdk/ \
-        {posargs}
-    {[testenv:mypy-coverage]commands}
-
 # Linters
 [testenv:flake8]
 basepython = python3