Update base python to 3.12

Upgrading to python 3.12 provides a ton of benefits both in authoring
and in runtime performance. Of particular note is the new type param
syntax, which will massively improve the readability of the
relatively large amount of generic typing that we make use of. In
addition, there's huge performance gains in asyncio as a whole.

This does not update any python code, only the configurations.

README.md

@@ -105,7 +105,7 @@ The code generator, `smithy-python-codegen`, hasn't been published yet, so
 you'll need to build it yourself. To build and run the generator you will need
 the following prerequisites:
 
-* Python 3.11 or newer
+* Python 3.12 or newer
   * (optional) Install [black](https://black.readthedocs.io/en/stable/) in your
     environment to have the generated output be auto-formatted.
 * The [Smithy CLI](https://smithy.io/2.0/guides/smithy-cli/cli_installation.html)
@@ -230,7 +230,7 @@ needed. Currently, pants requires python 3.7, 3.8, or 3.9 to run, so one of
 those must be available on your path. (It doesn't have to be the version that
 is linked to `python` or `python3`, it just needs `python3.9` etc.) It is,
 however, fully capable of building and working with code that uses newer python
-versions like we do. This repository uses a minimum python version of 3.11
+versions like we do. This repository uses a minimum python version of 3.12
 for all its packages, so you will need that too to work on it.
 
 Pants provides a number of python commands it calls goals, documented

codegen/README.md

@@ -11,7 +11,7 @@ clients.
 
 #### Optional Prerequisites - Python
 
-* Python 3.11 is required to run the generated code, but not run the generator.
+* Python 3.12 is required to run the generated code, but not run the generator.
   If it is present on the path, the generator will use it for linting and
   formatting.
 * Use of a

codegen/smithy-python-codegen/src/main/java/software/amazon/smithy/python/codegen/DirectedPythonCodegen.java

@@ -327,7 +327,7 @@ public void customizeAfterIntegrations(CustomizeDirective<GenerationContext, Pyt
         int minorVersion = Integer.parseInt(matcher.group("minor"));
         if (minorVersion < 11) {
             LOGGER.warning(format("""
-                    Found incompatible python version 3.%s.%s, expected 3.11.0 or greater. \
+                    Found incompatible python version 3.%s.%s, expected 3.12.0 or greater. \
                     Skipping formatting and type checking.""",
                     matcher.group("minor"), matcher.group("patch")));
             return;

codegen/smithy-python-codegen/src/main/java/software/amazon/smithy/python/codegen/SetupGenerator.java

@@ -75,7 +75,7 @@ private static void writePyproject(
                     version = $2S
                     description = $3S
                     readme = "README.md"
-                    requires-python = ">=3.11"
+                    requires-python = ">=3.12"
                     keywords = ["smithy", $1S]
                     license = {text = "Apache-2.0"}
                     classifiers = [
@@ -87,7 +87,7 @@ private static void writePyproject(
                         "Programming Language :: Python",
                         "Programming Language :: Python :: 3",
                         "Programming Language :: Python :: 3 :: Only",
-                        "Programming Language :: Python :: 3.11"
+                        "Programming Language :: Python :: 3.12"
                     ]
                     """, settings.getModuleName(), settings.getModuleVersion(), settings.getModuleDescription());
 

pants.toml

@@ -18,7 +18,7 @@ root_patterns = [
 ]
 
 [python]
-interpreter_constraints = [">=3.11"]
+interpreter_constraints = [">=3.12"]
 pip_version = "latest"
 enable_resolves = true
 resolves = { python-default = "python-default.lock" }
@@ -38,34 +38,42 @@ use_coverage = true
 
 [black]
 install_from_resolve = "python-default"
-args = ["-t py311"]
-interpreter_constraints = [">=3.11"]
+args = ["-t py312"]
+interpreter_constraints = [">=3.12"]
 
 [coverage-py]
-interpreter_constraints = [">=3.11"]
+install_from_resolve = "python-default"
+interpreter_constraints = [">=3.12"]
 report = [
     "xml",
     "html"
 ]
 
 [mypy]
 install_from_resolve = "python-default"
-interpreter_constraints = [">=3.11"]
+interpreter_constraints = [">=3.12"]
 
 [flake8]
 install_from_resolve = "python-default"
 args = "--extend-ignore=W503"
 
 [pyupgrade]
-args = ["--py311-plus"]
-interpreter_constraints = [">=3.11"]
+install_from_resolve = "python-default"
+args = ["--py312-plus"]
+interpreter_constraints = [">=3.12"]
 
 [docformatter]
+install_from_resolve = "python-default"
 args = ["--wrap-summaries 88", "--wrap-descriptions 88"]
-interpreter_constraints = [">=3.11"]
+interpreter_constraints = [">=3.12"]
 
 [bandit]
+install_from_resolve = "python-default"
 args = ["-x tests"]
 
+[isort]
+install_from_resolve = "python-default"
+interpreter_constraints = [">=3.12"]
+
 [anonymous-telemetry]
 enabled = false

python-packages/smithy-aws-core/pyproject.toml

@@ -9,7 +9,7 @@ description = "Core libraries for Smithy defined AWS services in Python."
 readme = "README.md"
 authors = [{name = "Amazon Web Services"}]
 keywords = ["aws", "python", "sdk", "amazon", "smithy", "codegen"]
-requires-python = ">=3.11"
+requires-python = ">=3.12"
 license = {text = "Apache License 2.0"}
 classifiers = [
     "Development Status :: 2 - Pre-Alpha",
@@ -21,7 +21,7 @@ classifiers = [
     "Programming Language :: Python",
     "Programming Language :: Python :: 3 :: Only",
     "Programming Language :: Python :: 3",
-    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
     "Programming Language :: Python :: Implementation :: CPython",
     "Topic :: Software Development :: Libraries"
 ]

python-packages/smithy-core/pyproject.toml

@@ -9,7 +9,7 @@ description = "Core library for Smithy defined services in Python."
 readme = "README.md"
 authors = [{name = "Amazon Web Services"}]
 keywords = ["aws", "python", "sdk", "amazon", "smithy", "codegen"]
-requires-python = ">=3.11"
+requires-python = ">=3.12"
 license = {text = "Apache License 2.0"}
 classifiers = [
     "Development Status :: 2 - Pre-Alpha",
@@ -21,7 +21,6 @@ classifiers = [
     "Programming Language :: Python",
     "Programming Language :: Python :: 3 :: Only",
     "Programming Language :: Python :: 3",
-    "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
     "Programming Language :: Python :: Implementation :: CPython",
     "Topic :: Software Development :: Libraries"

python-packages/smithy-http/pyproject.toml

@@ -9,7 +9,7 @@ description = "Core HTTP library for Smithy defined services in Python."
 readme = "README.md"
 authors = [{name = "Amazon Web Services"}]
 keywords = ["aws", "python", "sdk", "amazon", "smithy", "codegen", "http"]
-requires-python = ">=3.11"
+requires-python = ">=3.12"
 license = {text = "Apache License 2.0"}
 classifiers = [
     "Development Status :: 2 - Pre-Alpha",
@@ -21,7 +21,6 @@ classifiers = [
     "Programming Language :: Python",
     "Programming Language :: Python :: 3 :: Only",
     "Programming Language :: Python :: 3",
-    "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
     "Programming Language :: Python :: Implementation :: CPython",
     "Topic :: Software Development :: Libraries"

requirements-dev.txt

@@ -5,3 +5,7 @@ pytest<=7.4
 pytest-asyncio<0.21.0
 pytest-cov<=4.1.0
 freezegun<1.3.0
+pyupgrade<3.16.0
+isort<5.14.0
+docformatter<1.7.5
+bandit<1.8.0