Refresh code with Python 3.8 deprecation

.github/CONTRIBUTING.md

@@ -129,7 +129,7 @@ Remember, everyone starts somewhere, and we're here to support you on your journ
 #### Setting up your Development Environment
 
 Before getting started, you will need to have already installed:
-* [python](https://www.python.org) (3.8+ only)
+* [python](https://www.python.org) (3.9+ only)
 * [git](https://git-scm.com)
 * [just](https://github.com/casey/just)
 

.github/workflows/main.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
     steps:
       - uses: actions/checkout@v4
       - name: Set up Python ${{ matrix.python-version }}
@@ -50,7 +50,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
     steps:
     - uses: actions/checkout@v4
     - name: Set up Python ${{ matrix.python-version }}
@@ -86,7 +86,7 @@ jobs:
     runs-on: windows-latest
     strategy:
       matrix:
-        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
     steps:
     - uses: actions/checkout@v4
     - name: Set up Python ${{ matrix.python-version }}

README.md

@@ -143,7 +143,7 @@ Use pip to install:
 $ pip install mashumaro
 ```
 
-The current version of `mashumaro` supports Python versions 3.8 — 3.13.
+The current version of `mashumaro` supports Python versions 3.9 — 3.13.
 
 
 It's not recommended to use any version of Python that has reached its
@@ -155,6 +155,7 @@ of Python.
 
 | Python Version | Last Version of mashumaro                                          | Python EOL |
 |----------------|--------------------------------------------------------------------|------------|
+| 3.8            | [3.14](https://github.com/Fatal1ty/mashumaro/releases/tag/v3.14)   | 2024-10-07 |
 | 3.7            | [3.9.1](https://github.com/Fatal1ty/mashumaro/releases/tag/v3.9.1) | 2023-06-27 |
 | 3.6            | [3.1.1](https://github.com/Fatal1ty/mashumaro/releases/tag/v3.1.1) | 2021-12-23 |
 

mashumaro/codecs/_builder.py

@@ -1,5 +1,6 @@
 import re
-from typing import Any, Callable, Optional, Type
+from collections.abc import Callable
+from typing import Any, Optional, Type
 
 from mashumaro.core.meta.code.builder import CodeBuilder
 from mashumaro.core.meta.helpers import is_optional, is_type_var_any

mashumaro/codecs/basic.py

@@ -1,6 +1,6 @@
+from collections.abc import Callable
 from typing import (
     Any,
-    Callable,
     Generic,
     Optional,
     Type,

mashumaro/codecs/json.py

@@ -1,7 +1,7 @@
 import json
+from collections.abc import Callable
 from typing import (
     Any,
-    Callable,
     Generic,
     Optional,
     Type,

mashumaro/codecs/msgpack.py

@@ -1,6 +1,6 @@
+from collections.abc import Callable
 from typing import (
     Any,
-    Callable,
     Generic,
     Optional,
     Type,

mashumaro/codecs/yaml.py

@@ -1,6 +1,6 @@
+from collections.abc import Callable
 from typing import (
     Any,
-    Callable,
     Generic,
     Optional,
     Type,

mashumaro/config.py

@@ -1,14 +1,5 @@
-from typing import (
-    Any,
-    Callable,
-    Dict,
-    List,
-    Literal,
-    Optional,
-    Type,
-    TypedDict,
-    Union,
-)
+from collections.abc import Callable
+from typing import Any, Literal, Optional, Type, TypedDict, Union
 
 from mashumaro.core.const import Sentinel
 from mashumaro.dialect import Dialect
@@ -50,9 +41,9 @@ class SerializationStrategyDict(TypedDict, total=False):
 
 class BaseConfig:
     debug: bool = False
-    code_generation_options: List[CodeGenerationOption] = []
-    serialization_strategy: Dict[Any, SerializationStrategyValueType] = {}
-    aliases: Dict[str, str] = {}
+    code_generation_options: list[CodeGenerationOption] = []
+    serialization_strategy: dict[Any, SerializationStrategyValueType] = {}
+    aliases: dict[str, str] = {}
     serialize_by_alias: Union[bool, Literal[Sentinel.MISSING]] = (
         Sentinel.MISSING
     )
@@ -64,7 +55,7 @@ class BaseConfig:
     omit_none: Union[bool, Literal[Sentinel.MISSING]] = Sentinel.MISSING
     omit_default: Union[bool, Literal[Sentinel.MISSING]] = Sentinel.MISSING
     orjson_options: Optional[int] = 0
-    json_schema: Dict[str, Any] = {}
+    json_schema: dict[str, Any] = {}
     discriminator: Optional[Discriminator] = None
     lazy_compilation: bool = False
     sort_keys: bool = False

mashumaro/core/const.py

@@ -2,20 +2,16 @@
 import sys
 
 __all__ = [
-    "PY_38",
     "PY_39",
     "PY_310",
-    "PY_39_MIN",
     "PY_310_MIN",
     "PY_311_MIN",
     "PY_312_MIN",
     "PY_313_MIN",
-    "PEP_585_COMPATIBLE",
     "Sentinel",
 ]
 
 
-PY_38 = sys.version_info.major == 3 and sys.version_info.minor == 8
 PY_39 = sys.version_info.major == 3 and sys.version_info.minor == 9
 PY_310 = sys.version_info.major == 3 and sys.version_info.minor == 10
 PY_311 = sys.version_info.major == 3 and sys.version_info.minor == 11
@@ -25,9 +21,6 @@
 PY_312_MIN = PY_312 or PY_313_MIN
 PY_311_MIN = PY_311 or PY_312_MIN
 PY_310_MIN = PY_310 or PY_311_MIN
-PY_39_MIN = PY_39 or PY_310_MIN
-
-PEP_585_COMPATIBLE = PY_39_MIN  # Type Hinting Generics In Standard Collections
 
 
 class Sentinel(enum.Enum):

mashumaro/core/meta/code/builder.py

@@ -118,20 +118,18 @@ def __init__(
         format_name: str = "dict",
         decoder: typing.Optional[typing.Any] = None,
         encoder: typing.Optional[typing.Any] = None,
-        encoder_kwargs: typing.Optional[typing.Dict[str, typing.Any]] = None,
+        encoder_kwargs: typing.Optional[dict[str, typing.Any]] = None,
         default_dialect: typing.Optional[typing.Type[Dialect]] = None,
         attrs: typing.Any = None,
-        attrs_registry: typing.Optional[
-            typing.Dict[typing.Any, typing.Any]
-        ] = None,
+        attrs_registry: typing.Optional[dict[typing.Any, typing.Any]] = None,
     ):
         self.cls = cls
         self.lines: CodeLines = CodeLines()
-        self.globals: typing.Dict[str, typing.Any] = {}
-        self.resolved_type_params: typing.Dict[
-            typing.Type, typing.Dict[typing.Type, typing.Type]
+        self.globals: dict[str, typing.Any] = {}
+        self.resolved_type_params: dict[
+            typing.Type, dict[typing.Type, typing.Type]
         ] = {}
-        self.field_classes: typing.Dict = {}
+        self.field_classes: dict = {}
         self.initial_type_args = type_args
         if dialect is not None and not is_dialect_subclass(dialect):
             raise BadDialect(
@@ -168,7 +166,7 @@ def namespace(self) -> typing.Mapping[typing.Any, typing.Any]:
         return self.cls.__dict__
 
     @property
-    def annotations(self) -> typing.Dict[str, typing.Any]:
+    def annotations(self) -> dict[str, typing.Any]:
         return self.namespace.get("__annotations__", {})
 
     @property
@@ -177,7 +175,7 @@ def is_nailed(self) -> bool:
 
     def __get_field_types(
         self, recursive: bool = True, include_extras: bool = False
-    ) -> typing.Dict[str, typing.Any]:
+    ) -> dict[str, typing.Any]:
         fields = {}
         try:
             field_type_hints = typing_extensions.get_type_hints(
@@ -211,20 +209,20 @@ def get_real_type(
 
     def get_field_resolved_type_params(
         self, field_name: str
-    ) -> typing.Dict[typing.Type, typing.Type]:
+    ) -> dict[typing.Type, typing.Type]:
         cls = self._get_field_class(field_name)
         return self.resolved_type_params[cls]
 
     def get_field_types(
         self, include_extras: bool = False
-    ) -> typing.Dict[str, typing.Any]:
+    ) -> dict[str, typing.Any]:
         return self.__get_field_types(include_extras=include_extras)
 
     def get_type_name_identifier(
         self,
         typ: typing.Optional[typing.Type],
         resolved_type_params: typing.Optional[
-            typing.Dict[typing.Type, typing.Type]
+            dict[typing.Type, typing.Type]
         ] = None,
     ) -> str:
         field_type = type_name(typ, resolved_type_params=resolved_type_params)
@@ -237,7 +235,7 @@ def get_type_name_identifier(
 
     @property
     @lru_cache()
-    def dataclass_fields(self) -> typing.Dict[str, Field]:
+    def dataclass_fields(self) -> dict[str, Field]:
         d = {}
         for ancestor in self.cls.__mro__[-1:0:-1]:
             if is_dataclass(ancestor):
@@ -256,7 +254,7 @@ def dataclass_fields(self) -> typing.Dict[str, Field]:
         return d
 
     @property
-    def metadatas(self) -> typing.Dict[str, typing.Mapping[str, typing.Any]]:
+    def metadatas(self) -> dict[str, typing.Mapping[str, typing.Any]]:
         return {
             name: field.metadata
             for name, field in self.dataclass_fields.items()
@@ -1093,7 +1091,7 @@ def _add_pack_method_with_dialect_lines(self, method_name: str) -> None:
 
     def _get_encoder_kwargs(
         self, cls: typing.Optional[typing.Type] = None
-    ) -> typing.Dict[str, typing.Any]:
+    ) -> dict[str, typing.Any]:
         result = {}
         for encoder_param, value in self.encoder_kwargs.items():
             packer_param = value[0]

mashumaro/core/meta/code/lines.py

@@ -1,12 +1,13 @@
+from collections.abc import Generator
 from contextlib import contextmanager
-from typing import Generator, List, Optional
+from typing import Optional
 
 __all__ = ["CodeLines"]
 
 
 class CodeLines:
     def __init__(self) -> None:
-        self._lines: List[str] = []
+        self._lines: list[str] = []
         self._current_indent: str = ""
 
     def append(self, line: str) -> None: