Drop python 3.8

[ChristianGeng]

Closes #110

This is what has been done to avoid having to use typing:

• Using built-in type instead of typing.Type
• Using | for unions
• Using direct imports from collections.abc
• Using object instead of Any
• Using Mapping and Sequence from collections.abc

Summary by Sourcery

Drop support for Python 3.8 and update type annotations to use modern Python syntax.

Enhancements:

• Replace usage of 'typing' module with built-in types and direct imports from 'collections.abc'.

CI:

• Remove Python 3.8 from the CI testing matrix.

Chores:

• Update 'pyproject.toml' to remove Python 3.8 support and set the minimum required Python version to 3.9.

[sourcery-ai]

Reviewer's Guide by Sourcery

This PR removes Python 3.8 support and updates type hints to use modern Python syntax. The changes primarily involve replacing typing module usage with built-in type annotations and direct imports from collections.abc.

Updated class diagram for audobject.core.resolver

classDiagram
    class Base {
        +str | None root
        +object decode(DefaultValueType value)
        +DefaultValueType encode(object value)
    }
    class DefaultValueType {
        +bool
        +datetime
        +dict
        +float
        +int
        +list
        +None
        +str
    }
    class LambdaResolver {
        +Callable decode(str value)
        +str | object encode(Callable value)
        +str get_source(Callable func)
        +str _get_short_lambda_source(Callable lambda_func)
    }
    Base <|-- LambdaResolver

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Updated class diagram for audobject.core.object

classDiagram
    class Object {
        +Mapping~str, object~ arguments
        +Mapping~str, str~ borrowed_arguments
        +Sequence~str~ hidden_arguments
        +Mapping~str, resolver.Base~ resolvers
        +Mapping~str, resolver.DefaultValueType~ to_dict()
        +Object from_dict(Mapping~str, object~ d, str | None root)
        +Object from_yaml(str | io.IOBase path_or_stream)
        +void to_yaml(str | io.IOBase path_or_stream)
        +void _encode_variable(str name, object value, bool include_version, str | None root)
        +object _encode_value(object value, bool include_version)
        +Mapping~str, resolver.DefaultValueType~ _flatten(Mapping~str, resolver.DefaultValueType~ d)
        +resolver.DefaultValueType _resolve_value(str name, object value, str | None root)
    }

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Updated class diagram for audobject.core.parameter

classDiagram
    class Parameter {
        +type value_type
        +str description
        +object value
        +object default_value
        +Sequence~object~ choices
        +str | None version
        +bool __contains__(str | None version)
        +void set_value(object value)
        +void _check_value(object value)
        +void to_path(str delimiter, Sequence~str~ | None include, Sequence~str~ | None exclude, bool sort)
        +object __getattribute__(str name)
        +void __setattr__(str name, object value)
    }

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Updated class diagram for audobject.core.dictionary

classDiagram
    class Dictionary {
        +KeysView~str~ keys()
        +ItemsView~str, object~ items()
        +ValuesView~object~ values()
        +bool __contains__(str key)
        +object __getitem__(str name)
        +void __setitem__(str key, object value)
    }

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File-Level Changes

Change	Details	Files
Modernize type hint syntax across the codebase	Replace typing.Union with	operator for union types Replace typing.Optional with
Remove Python 3.8 from supported versions	Remove Python 3.8 from test matrix in GitHub Actions workflow Remove Python 3.8 from package classifiers Add requires-python >= 3.9 to pyproject.toml	.github/workflows/test.yml pyproject.toml

Assessment against linked issues

Issue	Objective	Addressed	Explanation
#110	Remove Python 3.8 support from the codebase	✅

Possibly linked issues

• Remove support for python 3.8 #110: The PR implements changes to remove Python 3.8 support, directly addressing the issue.

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[sourcery-ai]

Hey @ChristianGeng - I've reviewed your changes and they look great!

Here's what I looked at during the review

• 🟢 General issues: all looks good
• 🟢 Security: all looks good
• 🟢 Testing: all looks good
• 🟢 Complexity: all looks good
• 🟢 Documentation: all looks good

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.0%. Comparing base (2e9e40f) to head (efbbb4e).

Additional details and impacted files

Files with missing lines	Coverage Δ
audobject/core/api.py	100.0% <100.0%> (ø)
audobject/core/decorator.py	100.0% <100.0%> (ø)
audobject/core/dictionary.py	100.0% <100.0%> (ø)
audobject/core/object.py	100.0% <100.0%> (ø)
audobject/core/parameter.py	100.0% <100.0%> (ø)
audobject/core/resolver.py	100.0% <100.0%> (ø)
audobject/core/utils.py	100.0% <100.0%> (ø)

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