fix: remove python3.6 support (#434)

aws_lambda_builders/validator.py

@@ -15,7 +15,6 @@
     "nodejs14.x": [ARM64, X86_64],
     "nodejs16.x": [ARM64, X86_64],
     "nodejs18.x": [ARM64, X86_64],
-    "python3.6": [X86_64],
     "python3.7": [X86_64],
     "python3.8": [ARM64, X86_64],
     "python3.9": [ARM64, X86_64],

aws_lambda_builders/workflows/python_pip/packager.py

@@ -82,7 +82,6 @@ def __init__(self, version):
 
 def get_lambda_abi(runtime):
     supported = {
-        "python3.6": "cp36m",
         "python3.7": "cp37m",
         "python3.8": "cp38",
         "python3.9": "cp39",
@@ -100,7 +99,7 @@ def __init__(self, runtime, osutils=None, dependency_builder=None, architecture=
 
         :type runtime: str
         :param runtime: Python version to build dependencies for. This can
-            either be python3.6, python3.7, python3.8 or python3.9. These are currently the
+            either be python3.7, python3.8 or python3.9. These are currently the
             only supported values.
 
         :type osutils: :class:`lambda_builders.utils.OSUtils`
@@ -199,8 +198,6 @@ class DependencyBuilder(object):
 
     # Mapping of abi to glibc version in Lambda runtime.
     _RUNTIME_GLIBC = {
-        "cp27mu": (2, 17),
-        "cp36m": (2, 17),
         "cp37m": (2, 17),
         "cp38": (2, 26),
         "cp39": (2, 26),
@@ -410,15 +407,11 @@ def _is_compatible_wheel_filename(self, filename):
                 return True
             prefix_version = implementation[:3]
             if prefix_version == "cp3":
-                # Deploying python 3 function which means we need cp36m abi
+                # Deploying python 3 function which means we need cp37m abi
                 # We can also accept abi3 which is the CPython 3 Stable ABI and
                 # will work on any version of python 3.
                 if abi == lambda_runtime_abi or abi == "abi3":
                     return True
-            elif prefix_version == "cp2":
-                # Deploying to python 2 function which means we need cp27mu abi
-                if abi == "cp27mu":
-                    return True
         # Don't know what we have but it didn't pass compatibility tests.
         return False
 

aws_lambda_builders/workflows/python_pip/validator.py

@@ -31,7 +31,7 @@ def validate(self, runtime_path):
         Returns
         -------
         str
-            runtime_path, runtime to check eg: /usr/bin/python3.6
+            runtime_path, runtime to check eg: /usr/bin/python3.9
 
         Raises
         ------

pyproject.toml

@@ -14,7 +14,7 @@ ignore = ["PLR0913"]
 
 [tool.black]
 line-length = 120
-target_version = ['py37', 'py36', 'py38']
+target_version = ['py37', 'py38', 'py39']
 exclude = '''
 
 (

requirements/dev.txt

@@ -11,11 +11,6 @@ mock==4.0.2
 parameterized==0.7.4
 pyelftools~=0.27 # Used to verify the generated Go binary architecture in integration tests (utils.py)
 
-
-# tempfile backport for < 3.7
-backports.tempfile==1.0; python_version<"3.7"
-
-
 # formatter
 black==22.3.0
 ruff

setup.py

@@ -43,8 +43,8 @@ def read_version():
     license="Apache License 2.0",
     packages=find_packages(exclude=["tests.*", "tests"]),
     keywords="AWS Lambda Functions Building",
-    # Support 3.6 or greater
-    python_requires=(">=3.6"),
+    # Support 3.7 or greater
+    python_requires=(">=3.7"),
     entry_points={"console_scripts": ["{}=aws_lambda_builders.__main__:main".format(cmd_name)]},
     install_requires=read_requirements("base.txt") + read_requirements("python_pip.txt"),
     extras_require={"dev": read_requirements("dev.txt")},
@@ -58,7 +58,6 @@ def read_version():
         "License :: OSI Approved :: Apache Software License",
         "Operating System :: OS Independent",
         "Programming Language :: Python",
-        "Programming Language :: Python :: 3.6",
         "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",

tests/functional/workflows/python_pip/test_packager.py

@@ -204,7 +204,7 @@ def _write_requirements_txt(self, packages, directory):
     def _make_appdir_and_dependency_builder(self, reqs, tmpdir, runner, **kwargs):
         appdir = str(_create_app_structure(tmpdir))
         self._write_requirements_txt(reqs, appdir)
-        builder = DependencyBuilder(OSUtils(), "python3.6", runner, **kwargs)
+        builder = DependencyBuilder(OSUtils(), "python3.9", runner, **kwargs)
         return appdir, builder
 
     def test_can_build_local_dir_as_whl(self, tmpdir, pip_runner, osutils):
@@ -215,7 +215,7 @@ def test_can_build_local_dir_as_whl(self, tmpdir, pip_runner, osutils):
         pip.set_return_tuple(0, (b"Processing ../foo\n" b"  Link is a directory," b" ignoring download_dir"), b"")
         pip.wheels_to_build(
             expected_args=["--no-deps", "--wheel-dir", mock.ANY, "../foo"],
-            wheels_to_build=["foo-1.2-cp36-none-any.whl"],
+            wheels_to_build=["foo-1.2-cp39-none-any.whl"],
         )
 
         site_packages = os.path.join(appdir, "site-packages")
@@ -233,7 +233,7 @@ def test_can_get_whls_all_manylinux(self, tmpdir, pip_runner, osutils):
         requirements_file = os.path.join(appdir, "requirements.txt")
         pip.packages_to_download(
             expected_args=["-r", requirements_file, "--dest", mock.ANY, "--exists-action", "i"],
-            packages=["foo-1.2-cp36-cp36m-manylinux1_x86_64.whl", "bar-1.2-cp36-cp36m-manylinux1_x86_64.whl"],
+            packages=["foo-1.2-cp39-cp39-manylinux1_x86_64.whl", "bar-1.2-cp39-cp39-manylinux1_x86_64.whl"],
         )
 
         site_packages = os.path.join(appdir, ".chalice.", "site-packages")
@@ -276,7 +276,7 @@ def test_can_expand_purelib_whl(self, tmpdir, pip_runner, osutils):
         requirements_file = os.path.join(appdir, "requirements.txt")
         pip.packages_to_download(
             expected_args=["-r", requirements_file, "--dest", mock.ANY, "--exists-action", "i"],
-            packages=["foo-1.2-cp36-cp36m-manylinux1_x86_64.whl"],
+            packages=["foo-1.2-cp39-cp39-manylinux1_x86_64.whl"],
             whl_contents=["foo-1.2.data/purelib/foo/"],
         )
 
@@ -296,7 +296,7 @@ def test_can_expand_platlib_whl(self, tmpdir, pip_runner, osutils):
         requirements_file = os.path.join(appdir, "requirements.txt")
         pip.packages_to_download(
             expected_args=["-r", requirements_file, "--dest", mock.ANY, "--exists-action", "i"],
-            packages=["foo-1.2-cp36-cp36m-manylinux1_x86_64.whl"],
+            packages=["foo-1.2-cp39-cp39-manylinux1_x86_64.whl"],
             whl_contents=["foo-1.2.data/platlib/foo/"],
         )
 
@@ -318,7 +318,7 @@ def test_can_expand_platlib_and_purelib(self, tmpdir, pip_runner, osutils):
         requirements_file = os.path.join(appdir, "requirements.txt")
         pip.packages_to_download(
             expected_args=["-r", requirements_file, "--dest", mock.ANY, "--exists-action", "i"],
-            packages=["foo-1.2-cp36-cp36m-manylinux1_x86_64.whl"],
+            packages=["foo-1.2-cp39-cp39-manylinux1_x86_64.whl"],
             whl_contents=["foo-1.2.data/platlib/foo/", "foo-1.2.data/purelib/bar/"],
         )
 
@@ -340,7 +340,7 @@ def test_does_ignore_data(self, tmpdir, pip_runner, osutils):
         requirements_file = os.path.join(appdir, "requirements.txt")
         pip.packages_to_download(
             expected_args=["-r", requirements_file, "--dest", mock.ANY, "--exists-action", "i"],
-            packages=["foo-1.2-cp36-cp36m-manylinux1_x86_64.whl"],
+            packages=["foo-1.2-cp39-cp39-manylinux1_x86_64.whl"],
             whl_contents=["foo/placeholder", "foo-1.2.data/data/bar/"],
         )
 
@@ -363,7 +363,7 @@ def test_does_ignore_include(self, tmpdir, pip_runner, osutils):
         requirements_file = os.path.join(appdir, "requirements.txt")
         pip.packages_to_download(
             expected_args=["-r", requirements_file, "--dest", mock.ANY, "--exists-action", "i"],
-            packages=["foo-1.2-cp36-cp36m-manylinux1_x86_64.whl"],
+            packages=["foo-1.2-cp39-cp39-manylinux1_x86_64.whl"],
             whl_contents=["foo/placeholder", "foo.1.2.data/includes/bar/"],
         )
 
@@ -386,7 +386,7 @@ def test_does_ignore_scripts(self, tmpdir, pip_runner, osutils):
         requirements_file = os.path.join(appdir, "requirements.txt")
         pip.packages_to_download(
             expected_args=["-r", requirements_file, "--dest", mock.ANY, "--exists-action", "i"],
-            packages=["foo-1.2-cp36-cp36m-manylinux1_x86_64.whl"],
+            packages=["foo-1.2-cp39-cp39-manylinux1_x86_64.whl"],
             whl_contents=["{package_name}/placeholder", "{data_dir}/scripts/bar/placeholder"],
         )
 
@@ -410,7 +410,7 @@ def test_can_expand_platlib_and_platlib_and_root(self, tmpdir, pip_runner, osuti
         requirements_file = os.path.join(appdir, "requirements.txt")
         pip.packages_to_download(
             expected_args=["-r", requirements_file, "--dest", mock.ANY, "--exists-action", "i"],
-            packages=["foo-1.2-cp36-cp36m-manylinux1_x86_64.whl"],
+            packages=["foo-1.2-cp39-cp39-manylinux1_x86_64.whl"],
             whl_contents=[
                 "{package_name}/placeholder",
                 "{data_dir}/platlib/bar/placeholder",
@@ -435,9 +435,9 @@ def test_can_get_whls_mixed_compat(self, tmpdir, osutils, pip_runner):
         pip.packages_to_download(
             expected_args=["-r", requirements_file, "--dest", mock.ANY, "--exists-action", "i"],
             packages=[
-                "foo-1.0-cp36-none-any.whl",
-                "bar-1.2-cp36-cp36m-manylinux1_x86_64.whl",
-                "baz-1.5-cp36-cp36m-linux_x86_64.whl",
+                "foo-1.0-cp39-none-any.whl",
+                "bar-1.2-cp39-cp39-manylinux1_x86_64.whl",
+                "baz-1.5-cp39-cp39-linux_x86_64.whl",
             ],
         )
 
@@ -458,7 +458,7 @@ def test_can_support_pep_600_tags(self, tmpdir, osutils, pip_runner):
         pip.packages_to_download(
             expected_args=["-r", requirements_file, "--dest", mock.ANY, "--exists-action", "i"],
             packages=[
-                "foo-1.2-cp36-cp36m-manylinux_2_12_x86_64.whl",
+                "foo-1.2-cp39-cp39-manylinux_2_12_x86_64.whl",
             ],
         )
 
@@ -479,30 +479,7 @@ def test_can_support_compressed_tags(self, tmpdir, osutils, pip_runner):
         pip.packages_to_download(
             expected_args=["-r", requirements_file, "--dest", mock.ANY, "--exists-action", "i"],
             packages=[
-                "foo-1.2-cp36-cp36m-manylinux_2_5_x86_64.manylinux1_x86_64.whl",
-            ],
-        )
-
-        site_packages = os.path.join(appdir, ".chalice.", "site-packages")
-        with osutils.tempdir() as scratch_dir:
-            builder.build_site_packages(requirements_file, site_packages, scratch_dir)
-        installed_packages = os.listdir(site_packages)
-
-        pip.validate()
-        for req in reqs:
-            assert req in installed_packages
-
-    def test_can_get_py27_whls(self, tmpdir, osutils, pip_runner):
-        reqs = ["foo", "bar", "baz"]
-        pip, runner = pip_runner
-        appdir, builder = self._make_appdir_and_dependency_builder(reqs, tmpdir, runner)
-        requirements_file = os.path.join(appdir, "requirements.txt")
-        pip.packages_to_download(
-            expected_args=["-r", requirements_file, "--dest", mock.ANY, "--exists-action", "i"],
-            packages=[
-                "foo-1.0-cp27-none-any.whl",
-                "bar-1.2-cp27-none-manylinux1_x86_64.whl",
-                "baz-1.5-cp27-cp27mu-linux_x86_64.whl",
+                "foo-1.2-cp39-cp39-manylinux_2_5_x86_64.manylinux1_x86_64.whl",
             ],
         )
 
@@ -523,9 +500,9 @@ def test_can_get_arm64_whls(self, tmpdir, osutils, pip_runner):
         pip.packages_to_download(
             expected_args=["-r", requirements_file, "--dest", mock.ANY, "--exists-action", "i"],
             packages=[
-                "foo-1.0-cp36-none-any.whl",
-                "bar-1.2-cp36-none-manylinux2014_aarch64.whl",
-                "baz-1.5-cp36-cp36m-manylinux2014_aarch64.whl",
+                "foo-1.0-cp39-none-any.whl",
+                "bar-1.2-cp39-none-manylinux2014_aarch64.whl",
+                "baz-1.5-cp39-cp39-manylinux2014_aarch64.whl",
             ],
         )
 
@@ -613,10 +590,10 @@ def test_does_fail_on_pep_600_tag_with_unsupported_glibc_version(self, tmpdir, o
         pip.packages_to_download(
             expected_args=["-r", requirements_file, "--dest", mock.ANY, "--exists-action", "i"],
             packages=[
-                "foo-1.2-cp36-cp36m-manylinux_2_12_x86_64.whl",
-                "bar-1.2-cp36-cp36m-manylinux_2_999_x86_64.whl",
-                "baz-1.2-cp36-cp36m-manylinux_3_12_x86_64.whl",
-                "qux-1.2-cp36-cp36m-manylinux_3_999_x86_64.whl",
+                "foo-1.2-cp39-cp39-manylinux_2_12_x86_64.whl",
+                "bar-1.2-cp39-cp39-manylinux_2_999_x86_64.whl",
+                "baz-1.2-cp39-cp39-manylinux_3_12_x86_64.whl",
+                "qux-1.2-cp39-cp39-manylinux_3_999_x86_64.whl",
             ],
         )
 
@@ -642,7 +619,7 @@ def test_can_replace_incompat_whl(self, tmpdir, osutils, pip_runner):
         requirements_file = os.path.join(appdir, "requirements.txt")
         pip.packages_to_download(
             expected_args=["-r", requirements_file, "--dest", mock.ANY, "--exists-action", "i"],
-            packages=["foo-1.0-cp36-none-any.whl", "bar-1.2-cp36-cp36m-macosx_10_6_intel.whl"],
+            packages=["foo-1.0-cp39-none-any.whl", "bar-1.2-cp39-cp39-macosx_10_6_intel.whl"],
         )
         # Once the initial download has 1 incompatible whl file. The second,
         # more targeted download, finds manylinux1_x86_64 and downloads that.
@@ -660,7 +637,7 @@ def test_can_replace_incompat_whl(self, tmpdir, osutils, pip_runner):
                 mock.ANY,
                 "bar==1.2",
             ],
-            packages=["bar-1.2-cp36-cp36m-manylinux1_x86_64.whl"],
+            packages=["bar-1.2-cp39-cp39-manylinux1_x86_64.whl"],
         )
         site_packages = os.path.join(appdir, ".chalice.", "site-packages")
         with osutils.tempdir() as scratch_dir:
@@ -711,13 +688,13 @@ def test_can_build_sdist(self, tmpdir, osutils, pip_runner):
         requirements_file = os.path.join(appdir, "requirements.txt")
         pip.packages_to_download(
             expected_args=["-r", requirements_file, "--dest", mock.ANY, "--exists-action", "i"],
-            packages=["foo-1.2.zip", "bar-1.2-cp36-cp36m-manylinux1_x86_64.whl"],
+            packages=["foo-1.2.zip", "bar-1.2-cp39-cp39-manylinux1_x86_64.whl"],
         )
         # Foo is built from and is pure python so it yields a compatible
         # wheel file.
         pip.wheels_to_build(
             expected_args=["--no-deps", "--wheel-dir", mock.ANY, PathArgumentEndingWith("foo-1.2.zip")],
-            wheels_to_build=["foo-1.2-cp36-none-any.whl"],
+            wheels_to_build=["foo-1.2-cp39-none-any.whl"],
         )
         site_packages = os.path.join(appdir, ".chalice.", "site-packages")
         with osutils.tempdir() as scratch_dir:
@@ -735,7 +712,7 @@ def test_build_sdist_makes_incompatible_whl(self, tmpdir, osutils, pip_runner):
         requirements_file = os.path.join(appdir, "requirements.txt")
         pip.packages_to_download(
             expected_args=["-r", requirements_file, "--dest", mock.ANY, "--exists-action", "i"],
-            packages=["foo-1.2.zip", "bar-1.2-cp36-cp36m-manylinux1_x86_64.whl"],
+            packages=["foo-1.2.zip", "bar-1.2-cp39-cp39-manylinux1_x86_64.whl"],
         )
         # foo is compiled since downloading it failed to get any wheels. And
         # the second download for manylinux1_x86_64 wheels failed as well.
@@ -744,7 +721,7 @@ def test_build_sdist_makes_incompatible_whl(self, tmpdir, osutils, pip_runner):
         # can do to install this package.
         pip.wheels_to_build(
             expected_args=["--no-deps", "--wheel-dir", mock.ANY, PathArgumentEndingWith("foo-1.2.zip")],
-            wheels_to_build=["foo-1.2-cp36-cp36m-macosx_10_6_intel.whl"],
+            wheels_to_build=["foo-1.2-cp39-cp39-macosx_10_6_intel.whl"],
         )
         site_packages = os.path.join(appdir, ".chalice.", "site-packages")
         with osutils.tempdir() as scratch_dir:
@@ -813,7 +790,7 @@ def test_build_into_existing_dir_with_preinstalled_packages(self, tmpdir, osutil
         requirements_file = os.path.join(appdir, "requirements.txt")
         pip.packages_to_download(
             expected_args=["-r", requirements_file, "--dest", mock.ANY, "--exists-action", "i"],
-            packages=["foo-1.2.zip", "bar-1.2-cp36-cp36m-manylinux1_x86_64.whl"],
+            packages=["foo-1.2.zip", "bar-1.2-cp39-cp39-manylinux1_x86_64.whl"],
         )
         pip.packages_to_download(
             expected_args=[
@@ -829,7 +806,7 @@ def test_build_into_existing_dir_with_preinstalled_packages(self, tmpdir, osutil
                 mock.ANY,
                 "foo==1.2",
             ],
-            packages=["foo-1.2-cp36-cp36m-macosx_10_6_intel.whl"],
+            packages=["foo-1.2-cp39-cp39-macosx_10_6_intel.whl"],
         )
 
         # Add two fake packages foo and bar that have previously been

tests/integration/workflows/python_pip/test_python_pip.py

@@ -57,7 +57,6 @@ def setUp(self):
             language=self.builder.capability.language, major=sys.version_info.major, minor=sys.version_info.minor
         )
         self.runtime_mismatch = {
-            "python3.6": "python3.7",
             "python3.7": "python3.8",
             "python3.8": "python3.9",
             "python3.9": "python3.7",
@@ -93,12 +92,8 @@ def test_must_build_python_project(self):
             experimental_flags=self.experimental_flags,
         )
 
-        if self.runtime == "python3.6":
-            self.check_architecture_in("numpy-1.17.4.dist-info", ["manylinux2010_x86_64", "manylinux1_x86_64"])
-            expected_files = self.test_data_files.union({"numpy", "numpy-1.17.4.dist-info"})
-        else:
-            self.check_architecture_in("numpy-1.20.3.dist-info", ["manylinux2010_x86_64", "manylinux1_x86_64"])
-            expected_files = self.test_data_files.union({"numpy", "numpy-1.20.3.dist-info", "numpy.libs"})
+        self.check_architecture_in("numpy-1.20.3.dist-info", ["manylinux2010_x86_64", "manylinux1_x86_64"])
+        expected_files = self.test_data_files.union({"numpy", "numpy-1.20.3.dist-info", "numpy.libs"})
 
         output_files = set(os.listdir(self.artifacts_dir))
         self.assertEqual(expected_files, output_files)
@@ -118,13 +113,8 @@ def test_must_build_python_project_python3_binary(self):
             experimental_flags=self.experimental_flags,
             executable_search_paths=[executable_dir],
         )
-
-        if self.runtime == "python3.6":
-            self.check_architecture_in("numpy-1.17.4.dist-info", ["manylinux2010_x86_64", "manylinux1_x86_64"])
-            expected_files = self.test_data_files.union({"numpy", "numpy-1.17.4.dist-info"})
-        else:
-            self.check_architecture_in("numpy-1.20.3.dist-info", ["manylinux2010_x86_64", "manylinux1_x86_64"])
-            expected_files = self.test_data_files.union({"numpy", "numpy-1.20.3.dist-info", "numpy.libs"})
+        self.check_architecture_in("numpy-1.20.3.dist-info", ["manylinux2010_x86_64", "manylinux1_x86_64"])
+        expected_files = self.test_data_files.union({"numpy", "numpy-1.20.3.dist-info", "numpy.libs"})
 
         output_files = set(os.listdir(self.artifacts_dir))
         self.assertEqual(expected_files, output_files)

tests/unit/test_validator.py

@@ -22,7 +22,7 @@ def test_validate_with_unsupported_runtime(self):
             validator.validate("/usr/bin/unknown_runtime")
 
     def test_validate_with_runtime_and_incompatible_architecture(self):
-        runtime_list = ["python3.6", "python3.7"]
+        runtime_list = ["python3.7"]
         for runtime in runtime_list:
             validator = RuntimeValidator(runtime=runtime, architecture="arm64")
             with self.assertRaises(UnsupportedArchitectureError):