Drop py36 for CI

Author: alex

.github/workflows/ci.yml

@@ -28,6 +28,7 @@ jobs:
           - {VERSION: "3.11", TOXENV: "docs", OPENSSL: {TYPE: "openssl", VERSION: "3.0.8"}}
           - {VERSION: "pypy-3.8", TOXENV: "pypy3-nocoverage"}
           - {VERSION: "pypy-3.9", TOXENV: "pypy3-nocoverage"}
+          - {VERSION: "3.11", TOXENV: "py311", OPENSSL: {TYPE: "openssl", VERSION: "1.1.1c"}}
           - {VERSION: "3.11", TOXENV: "py311", OPENSSL: {TYPE: "openssl", VERSION: "1.1.1t"}}
           - {VERSION: "3.11", TOXENV: "py311-ssh", OPENSSL: {TYPE: "openssl", VERSION: "1.1.1t"}}
           - {VERSION: "3.11", TOXENV: "py311", OPENSSL: {TYPE: "openssl", VERSION: "1.1.1t", CONFIG_FLAGS: "no-engine no-rc2 no-srtp no-ct no-psk"}}
@@ -124,15 +125,12 @@ jobs:
       fail-fast: false
       matrix:
         IMAGE:
-          - {IMAGE: "rhel8", TOXENV: "py36", RUNNER: "ubuntu-latest"}
-          - {IMAGE: "rhel8-fips", TOXENV: "py36", RUNNER: "ubuntu-latest", FIPS: true}
           - {IMAGE: "rhel8", TOXENV: "py38", RUNNER: "ubuntu-latest"}
           - {IMAGE: "rhel8-fips", TOXENV: "py38", RUNNER: "ubuntu-latest", FIPS: true}
           - {IMAGE: "buster", TOXENV: "py37", RUNNER: "ubuntu-latest"}
           - {IMAGE: "bullseye", TOXENV: "py39", RUNNER: "ubuntu-latest"}
           - {IMAGE: "bookworm", TOXENV: "py311", RUNNER: "ubuntu-latest"}
           - {IMAGE: "sid", TOXENV: "py311", RUNNER: "ubuntu-latest"}
-          - {IMAGE: "ubuntu-bionic", TOXENV: "py36", RUNNER: "ubuntu-latest"}
           - {IMAGE: "ubuntu-focal", TOXENV: "py38", RUNNER: "ubuntu-latest"}
           - {IMAGE: "ubuntu-jammy", TOXENV: "py310", RUNNER: "ubuntu-latest"}
           - {IMAGE: "ubuntu-rolling", TOXENV: "py310", RUNNER: "ubuntu-latest"}
@@ -350,11 +348,12 @@ jobs:
           - {OS: 'macos-12', ARCH: 'x86_64'}
           - {OS: [self-hosted, macos, ARM64, tart], ARCH: 'arm64'}
         PYTHON:
-          - {VERSION: "3.6", TOXENV: "py36-nocoverage", EXTRA_CFLAGS: ""}
+          - {VERSION: "3.7", TOXENV: "py37-nocoverage", EXTRA_CFLAGS: ""}
           - {VERSION: "3.11", TOXENV: "py311", EXTRA_CFLAGS: "-DUSE_OSRANDOM_RNG_FOR_TESTING"}
         exclude:
-          # We only test latest Python on arm64. The py36 won't work since there's no universal2 binary
-          - PYTHON: {VERSION: "3.6", TOXENV: "py36-nocoverage", EXTRA_CFLAGS: ""}
+          # We only test latest Python on arm64. The py37 won't work since
+          # there's no universal2 binary
+          - PYTHON: {VERSION: "3.7", TOXENV: "py37-nocoverage", EXTRA_CFLAGS: ""}
             RUNNER: {OS: [self-hosted, macos, ARM64, tart], ARCH: 'arm64'}
     name: "${{ matrix.PYTHON.TOXENV }} on macOS ${{ matrix.RUNNER.ARCH }}"
     timeout-minutes: 15
@@ -415,7 +414,7 @@ jobs:
           - {ARCH: 'x86', WINDOWS: 'win32'}
           - {ARCH: 'x64', WINDOWS: 'win64'}
         PYTHON:
-          - {VERSION: "3.6", TOXENV: "py36-nocoverage", CL_FLAGS: ""}
+          - {VERSION: "3.7", TOXENV: "py37-nocoverage", CL_FLAGS: ""}
           - {VERSION: "3.11", TOXENV: "py311", CL_FLAGS: "/D USE_OSRANDOM_RNG_FOR_TESTING"}
         JOB_NUMBER: [0, 1]
     name: "${{ matrix.PYTHON.TOXENV }} on ${{ matrix.WINDOWS.WINDOWS }} (part ${{ matrix.JOB_NUMBER }})"

.github/workflows/wheel-builder.yml

@@ -53,7 +53,7 @@ jobs:
       fail-fast: false
       matrix:
         PYTHON:
-          - { VERSION: "cp36-cp36m", ABI_VERSION: 'cp36' }
+          - { VERSION: "cp37-cp37m", ABI_VERSION: 'cp37' }
           - { VERSION: "pp38-pypy38_pp73" }
           - { VERSION: "pp39-pypy39_pp73" }
         MANYLINUX:
@@ -141,7 +141,7 @@ jobs:
       matrix:
         PYTHON:
           - VERSION: '3.10'
-            ABI_VERSION: 'cp36'
+            ABI_VERSION: 'cp37'
             # Despite the name, this is built for the macOS 11 SDK on arm64 and 10.9+ on intel
             DOWNLOAD_URL: 'https://www.python.org/ftp/python/3.10.9/python-3.10.9-macos11.pkg'
             BIN_PATH: '/Library/Frameworks/Python.framework/Versions/3.10/bin/python3'
@@ -153,7 +153,7 @@ jobs:
             # build against
             _PYTHON_HOST_PLATFORM: 'macosx-10.9-universal2'
           - VERSION: '3.10'
-            ABI_VERSION: 'cp36'
+            ABI_VERSION: 'cp37'
             DOWNLOAD_URL: 'https://www.python.org/ftp/python/3.10.9/python-3.10.9-macos11.pkg'
             BIN_PATH: '/Library/Frameworks/Python.framework/Versions/3.10/bin/python3'
             DEPLOYMENT_TARGET: '10.12'
@@ -248,7 +248,7 @@ jobs:
           - {ARCH: 'x86', WINDOWS: 'win32', RUST_TRIPLE: 'i686-pc-windows-msvc'}
           - {ARCH: 'x64', WINDOWS: 'win64', RUST_TRIPLE: 'x86_64-pc-windows-msvc'}
         PYTHON:
-          - {VERSION: "3.8", "ABI_VERSION": "cp36"}
+          - {VERSION: "3.8", "ABI_VERSION": "cp37"}
           - {VERSION: "pypy-3.8"}
           - {VERSION: "pypy-3.9"}
         exclude:

src/cryptography/__init__.py

@@ -2,23 +2,11 @@
 # 2.0, and the BSD License. See the LICENSE file in the root of this repository
 # for complete details.
 
-import sys
-import warnings
 
 from cryptography.__about__ import __author__, __copyright__, __version__
-from cryptography.utils import CryptographyDeprecationWarning
 
 __all__ = [
     "__version__",
     "__author__",
     "__copyright__",
 ]
-
-if sys.version_info[:2] == (3, 6):
-    warnings.warn(
-        "Python 3.6 is no longer supported by the Python core team. "
-        "Therefore, support for it is deprecated in cryptography. The next "
-        "release of cryptography will remove support for Python 3.6.",
-        CryptographyDeprecationWarning,
-        stacklevel=2,
-    )