fix #17

pydantic_settings_aws/aws.py

@@ -1,5 +1,5 @@
 import json
-from typing import Any, AnyStr, Dict, Optional, Union
+from typing import Any, AnyStr, Dict, Optional, Type, Union
 
 import boto3  # type: ignore[import-untyped]
 from pydantic import ValidationError
@@ -10,7 +10,7 @@
 
 
 def get_ssm_content(
-    settings: type[BaseSettings],
+    settings: Type[BaseSettings],
     field_name: str,
     ssm_info: Optional[Union[Dict[Any, AnyStr], AnyStr]] = None
 ) -> Optional[str]:
@@ -36,14 +36,14 @@ def get_ssm_content(
         client = _get_ssm_boto3_client(settings)
 
     logger.debug(f"Getting parameter {ssm_name} value with boto3 client")
-    ssm_response: dict[str, Any] = client.get_parameter( # type: ignore
+    ssm_response: Dict[str, Any] = client.get_parameter( # type: ignore
         Name=ssm_name, WithDecryption=True
     )
 
     return ssm_response.get("Parameter", {}).get("Value", None)
 
 
-def get_secrets_content(settings: type[BaseSettings]) -> dict[str, Any]:
+def get_secrets_content(settings: Type[BaseSettings]) -> Dict[str, Any]:
     client = _get_secrets_boto3_client(settings)
     secrets_args: AwsSecretsArgs = _get_secrets_args(settings)
 
@@ -69,7 +69,7 @@ def get_secrets_content(settings: type[BaseSettings]) -> dict[str, Any]:
         raise json_err
 
 
-def _get_secrets_boto3_client( settings: type[BaseSettings]): # type: ignore[no-untyped-def]
+def _get_secrets_boto3_client( settings: Type[BaseSettings]): # type: ignore[no-untyped-def]
     logger.debug("Getting secrets manager content.")
     client = settings.model_config.get("secrets_client", None)
 
@@ -80,7 +80,7 @@ def _get_secrets_boto3_client( settings: type[BaseSettings]): # type: ignore[no-
     return _create_secrets_client(settings)
 
 
-def _create_secrets_client(settings: type[BaseSettings]):  # type: ignore[no-untyped-def]
+def _create_secrets_client(settings: Type[BaseSettings]):  # type: ignore[no-untyped-def]
     """Create a boto3 client for secrets manager.
 
     Neither `boto3` nor `pydantic` exceptions will be handled.
@@ -92,7 +92,7 @@ def _create_secrets_client(settings: type[BaseSettings]):  # type: ignore[no-unt
         SecretsManagerClient: A secrets manager boto3 client.
     """
     logger.debug("Extracting settings prefixed with aws_")
-    args: dict[str, Any] = {
+    args: Dict[str, Any] = {
         k: v for k, v in settings.model_config.items() if k.startswith("aws_")
     }
 
@@ -105,11 +105,11 @@ def _create_secrets_client(settings: type[BaseSettings]):  # type: ignore[no-unt
     return session.client("secretsmanager")
 
 
-def _get_secrets_args(settings: type[BaseSettings]) -> AwsSecretsArgs:
+def _get_secrets_args(settings: Type[BaseSettings]) -> AwsSecretsArgs:
     logger.debug(
         "Extracting settings prefixed with secrets_, except _client and _dir"
     )
-    args: dict[str, Any] = {
+    args: Dict[str, Any] = {
         k: v
         for k, v in settings.model_config.items()
         if k.startswith("secrets_")
@@ -139,7 +139,7 @@ def _get_secrets_content(
         logger.debug(
             "SecretString was not present. Getting content from SecretBinary."
         )
-        secret_binary: bytes | None = secret.get("SecretBinary")
+        secret_binary: Optional[bytes] = secret.get("SecretBinary")
 
         if secret_binary:
             try:
@@ -152,7 +152,7 @@ def _get_secrets_content(
     return secrets_content
 
 
-def _get_ssm_boto3_client(settings: type[BaseSettings]): # type: ignore[no-untyped-def]
+def _get_ssm_boto3_client(settings: Type[BaseSettings]): # type: ignore[no-untyped-def]
     logger.debug("Getting secrets manager content.")
     client = settings.model_config.get("ssm_client", None)
 
@@ -165,7 +165,7 @@ def _get_ssm_boto3_client(settings: type[BaseSettings]): # type: ignore[no-untyp
     return _create_ssm_client(settings)
 
 
-def _create_ssm_client(settings: type[BaseSettings]): # type: ignore[no-untyped-def]
+def _create_ssm_client(settings: Type[BaseSettings]): # type: ignore[no-untyped-def]
     """Create a boto3 client for parameter store.
 
     Neither `boto3` nor `pydantic` exceptions will be handled.
@@ -177,7 +177,7 @@ def _create_ssm_client(settings: type[BaseSettings]): # type: ignore[no-untyped-
         SSMClient: A parameter ssm boto3 client.
     """
     logger.debug("Extracting settings prefixed with aws_")
-    args: dict[str, Any] = {
+    args: Dict[str, Any] = {
         k: v for k, v in settings.model_config.items() if k.startswith("aws_")
     }
 

pydantic_settings_aws/settings.py

@@ -1,3 +1,5 @@
+from typing import Tuple, Type
+
 from pydantic_settings import (
     BaseSettings,
     PydanticBaseSettingsSource,
@@ -10,12 +12,12 @@ class ParameterStoreBaseSettings(BaseSettings):
     @classmethod
     def settings_customise_sources(
         cls,
-        settings_cls: type[BaseSettings],
+        settings_cls: Type[BaseSettings],
         init_settings: PydanticBaseSettingsSource,
         env_settings: PydanticBaseSettingsSource,
         dotenv_settings: PydanticBaseSettingsSource,
         file_secret_settings: PydanticBaseSettingsSource,
-    ) -> tuple[PydanticBaseSettingsSource, ...]:
+    ) -> Tuple[PydanticBaseSettingsSource, ...]:
         return (
             init_settings,
             ParameterStoreSettingsSource(settings_cls),
@@ -29,12 +31,12 @@ class SecretsManagerBaseSettings(BaseSettings):
     @classmethod
     def settings_customise_sources(
         cls,
-        settings_cls: type[BaseSettings],
+        settings_cls: Type[BaseSettings],
         init_settings: PydanticBaseSettingsSource,
         env_settings: PydanticBaseSettingsSource,
         dotenv_settings: PydanticBaseSettingsSource,
         file_secret_settings: PydanticBaseSettingsSource,
-    ) -> tuple[PydanticBaseSettingsSource, ...]:
+    ) -> Tuple[PydanticBaseSettingsSource, ...]:
         return (
             init_settings,
             SecretsManagerSettingsSource(settings_cls),

pydantic_settings_aws/sources.py

@@ -1,4 +1,4 @@
-from typing import Any
+from typing import Any, Dict, Tuple, Type
 
 from pydantic.fields import FieldInfo
 from pydantic_settings import (
@@ -12,12 +12,12 @@
 class ParameterStoreSettingsSource(PydanticBaseSettingsSource):
     """Source class for loading settings from AWS Parameter Store.
     """
-    def __init__(self, settings_cls: type[BaseSettings]):
+    def __init__(self, settings_cls: Type[BaseSettings]):
         super().__init__(settings_cls)
 
     def get_field_value(
         self, field: FieldInfo, field_name: str
-    ) -> tuple[Any, str, bool]:
+    ) -> Tuple[Any, str, bool]:
         ssm_info = utils.get_ssm_name_from_annotated_field(field.metadata)
         field_value = aws.get_ssm_content(self.settings_cls, field_name, ssm_info)
 
@@ -32,8 +32,8 @@ def prepare_field_value(
     ) -> Any:
         return value
 
-    def __call__(self) -> dict[str, Any]:
-        d: dict[str, Any] = {}
+    def __call__(self) -> Dict[str, Any]:
+        d: Dict[str, Any] = {}
 
         for field_name, field in self.settings_cls.model_fields.items():
             field_value, field_key, value_is_complex = self.get_field_value(
@@ -49,13 +49,13 @@ def __call__(self) -> dict[str, Any]:
 
 
 class SecretsManagerSettingsSource(PydanticBaseSettingsSource):
-    def __init__(self, settings_cls: type[BaseSettings]):
+    def __init__(self, settings_cls: Type[BaseSettings]):
         super().__init__(settings_cls)
         self._json_content = aws.get_secrets_content(settings_cls)
 
     def get_field_value(
         self, field: FieldInfo, field_name: str
-    ) -> tuple[Any, str, bool]:
+    ) -> Tuple[Any, str, bool]:
         field_value = self._json_content.get(field_name)
         return field_value, field_name, False
 
@@ -68,8 +68,8 @@ def prepare_field_value(
     ) -> Any:
         return value
 
-    def __call__(self) -> dict[str, Any]:
-        d: dict[str, Any] = {}
+    def __call__(self) -> Dict[str, Any]:
+        d: Dict[str, Any] = {}
 
         for field_name, field in self.settings_cls.model_fields.items():
             field_value, field_key, value_is_complex = self.get_field_value(

pyproject.toml

@@ -18,6 +18,7 @@ classifiers = [
     'Programming Language :: Python',
     'Programming Language :: Python :: 3',
     'Programming Language :: Python :: 3 :: Only',
+    'Programming Language :: Python :: 3.8',
     'Programming Language :: Python :: 3.9',
     'Programming Language :: Python :: 3.10',
     'Programming Language :: Python :: 3.11',
@@ -34,7 +35,7 @@ classifiers = [
     'Topic :: Software Development :: Libraries :: Python Modules',
     'Topic :: Internet',
 ]
-requires-python = '>=3.9'
+requires-python = '>=3.8'
 dependencies = [
     'pydantic>=2.0.1',
     'pydantic-settings>=2.0.2',
@@ -85,7 +86,7 @@ quote-style = 'double'
 indent-style = 'space'
 
 [tool.mypy]
-python_version = '3.10'
+python_version = '3.8'
 show_error_codes = true
 follow_imports = 'silent'
 strict_optional = true

requirements-test.txt

@@ -3,6 +3,6 @@
 black>=24.4.2
 ruff>=0.5.1
 mypy>=1.10.1
-pre-commit>=3.7.1
+pre-commit>=3.5.0
 pytest>=8.2.2
 pytest-cov>=5.0.0

tests/settings_mocks.py

@@ -1,8 +1,9 @@
 import json
-from typing import Annotated, Optional
+from typing import List, Optional
 
 from pydantic import BaseModel
 from pydantic_settings import SettingsConfigDict
+from typing_extensions import Annotated
 
 from pydantic_settings_aws import (
     ParameterStoreBaseSettings,
@@ -45,7 +46,7 @@ class MySecretsWithClientConfig(SecretsManagerBaseSettings):
 
 
 class NestedContent(BaseModel):
-    roles: list[str]
+    roles: List[str]
 
 
 class SecretsWithNestedContent(SecretsManagerBaseSettings):