Drop Python 3.10 support

[dbanty]

No description provided.

[Copilot]

Pull request overview

This PR drops Python 3.10 support across the generator, its templates, and test fixtures by raising the minimum supported Python version to 3.11 and removing 3.10 compatibility workarounds.

Changes:

• Raise minimum supported Python version to 3.11 in project metadata, templates, CI, and test projects.
• Simplify enums and datetime parsing now that Python 3.11 features/behavior are available (e.g., StrEnum, datetime.UTC, relaxed fromisoformat handling).
• Refresh lockfiles and golden records/integration fixtures to align with the new minimum version.

Reviewed changes

Copilot reviewed 34 out of 38 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
tests/test_templates/test_property_templates/test_datetime_property/required_not_null.py	Updates the datetime template snapshot expectation to remove the Z normalization workaround.
pyproject.toml	Bumps requires-python to >=3.11 and removes the Python 3.10 classifier.
pdm.minimal.lock	Regenerates minimal lock targeting Python 3.11 (drops 3.10-only/backport deps).
pdm.lock	Regenerates lock targeting Python 3.11 (also includes some dependency patch bumps).
openapi_python_client/templates/setup.py.jinja	Updates generated python_requires to >=3.11.
openapi_python_client/templates/pyproject_uv.toml.jinja	Updates generated requires-python to >=3.11.
openapi_python_client/templates/pyproject_poetry.toml.jinja	Updates generated Poetry python constraint to ^3.11.
openapi_python_client/templates/pyproject_pdm.toml.jinja	Updates generated requires-python to >=3.11.
openapi_python_client/templates/property_templates/datetime_property.py.jinja	Removes Python 3.10-specific Z replacement before fromisoformat.
openapi_python_client/schema/parameter_location.py	Switches to StrEnum and removes version-conditional enum implementation.
openapi_python_client/schema/data_type.py	Switches DataType to StrEnum.
openapi_python_client/parser/properties/datetime.py	Removes Z normalization and validates/constructs datetime directly via fromisoformat.
openapi_python_client/parser/bodies.py	Switches BodyType to StrEnum and removes version-conditional enum implementation.
openapi_python_client/config.py	Switches MetaType to StrEnum.
integration-tests/tests/test_api/test_body/test_post_body_multipart.py	Uses datetime.UTC/UTC instead of timezone.utc for 3.11+.
integration-tests/pyproject.toml	Bumps integration test project minimum Python to >=3.11.
integration-tests/pdm.minimal.lock	Regenerates integration minimal lock targeting Python 3.11.
integration-tests/pdm.lock	Regenerates integration lock targeting Python 3.11.
integration-tests/integration_tests/models/post_body_multipart_response_200.py	Removes Z replacement before fromisoformat in generated integration fixture code.
integration-tests/integration_tests/models/post_body_multipart_body.py	Removes Z replacement before fromisoformat in generated integration fixture code.
end_to_end_tests/test-3-1-golden-record/pyproject.toml	Bumps golden-record Poetry python constraint to ^3.11.
end_to_end_tests/metadata_snapshots/uv.pyproject.toml	Updates snapshot requires-python to >=3.11.
end_to_end_tests/metadata_snapshots/setup.py	Updates snapshot python_requires to >=3.11.
end_to_end_tests/metadata_snapshots/poetry.pyproject.toml	Updates snapshot Poetry python constraint to ^3.11.
end_to_end_tests/metadata_snapshots/pdm.pyproject.toml	Updates snapshot requires-python to >=3.11.
end_to_end_tests/literal-enums-golden-record/pyproject.toml	Bumps golden-record Poetry python constraint to ^3.11.
end_to_end_tests/golden-record/pyproject.toml	Bumps golden-record Poetry python constraint to ^3.11.
end_to_end_tests/golden-record/my_test_api_client/models/model_with_primitive_additional_properties_a_date_holder.py	Removes Z replacement before fromisoformat in golden record.
end_to_end_tests/golden-record/my_test_api_client/models/model_with_date_time_property.py	Removes Z replacement before fromisoformat in golden record.
end_to_end_tests/golden-record/my_test_api_client/models/extended.py	Removes Z replacement before fromisoformat in golden record parsing helper.
end_to_end_tests/golden-record/my_test_api_client/models/body_upload_file_tests_upload_post.py	Removes Z replacement before fromisoformat in golden record parsing helper.
end_to_end_tests/golden-record/my_test_api_client/models/a_model.py	Removes Z replacement before fromisoformat in golden record parsing helper.
end_to_end_tests/golden-record/my_test_api_client/models/a_model_with_properties_reference_that_are_not_object.py	Removes Z replacement before fromisoformat in multiple golden record parsing sites.
end_to_end_tests/functional_tests/generated_code_execution/test_properties.py	Uses datetime.UTC in functional test for 3.11+.
end_to_end_tests/functional_tests/generated_code_execution/test_defaults.py	Uses datetime.UTC in functional test defaults for 3.11+.
.github/workflows/checks.yml	Removes Python 3.10 from CI matrix and pins other jobs to 3.11+.
.changeset/drop_support_for_python_310.md	Adds a changeset marking the breaking change (major bump).

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