Switch to modern dict type hints for improved readability and consistency.

dj_database_url/__init__.py

@@ -1,10 +1,10 @@
 import logging
 import os
 import urllib.parse as urlparse
-from typing import Any, Callable, Dict, List, Optional, TypedDict, Union
+from typing import Any, Callable, Optional, TypedDict
 
 DEFAULT_ENV = "DATABASE_URL"
-ENGINE_SCHEMES: Dict[str, "Engine"] = {}
+ENGINE_SCHEMES: dict[str, "Engine"] = {}
 
 
 # From https://docs.djangoproject.com/en/stable/ref/settings/#databases
@@ -17,16 +17,16 @@ class DBConfig(TypedDict, total=False):
     ENGINE: str
     HOST: str
     NAME: str
-    OPTIONS: Dict[str, Any]
+    OPTIONS: dict[str, Any]
     PASSWORD: str
-    PORT: Union[str, int]
-    TEST: Dict[str, Any]
+    PORT: str | int
+    TEST: dict[str, Any]
     TIME_ZONE: str
     USER: str
 
 
 PostprocessCallable = Callable[[DBConfig], None]
-OptionType = Union[int, str, bool]
+OptionType = int | str | bool
 
 
 class ParseError(ValueError):
@@ -38,7 +38,7 @@ class ParseError(ValueError):
 
 
 class UnknownSchemeError(ValueError):
-    def __init__(self, scheme: str) -> None:
+    def __init__(self, scheme: str):
         self.scheme = scheme
 
     def __str__(self) -> str:
@@ -59,7 +59,7 @@ class Engine:
         self,
         backend: str,
         postprocess: PostprocessCallable = default_postprocess,
-    ) -> None:
+    ):
         self.backend = backend
         self.postprocess = postprocess
 
@@ -131,7 +131,7 @@ def config(
     conn_health_checks: bool = False,
     disable_server_side_cursors: bool = False,
     ssl_require: bool = False,
-    test_options: Optional[Dict[str, Any]] = None,
+    test_options: Optional[dict[str, Any]] = None,
 ) -> DBConfig:
     """Returns configured DATABASE dictionary from DATABASE_URL."""
     s = os.environ.get(env, default)
@@ -162,7 +162,7 @@ def parse(
     conn_health_checks: bool = False,
     disable_server_side_cursors: bool = False,
     ssl_require: bool = False,
-    test_options: Optional[Dict[str, Any]] = None,
+    test_options: Optional[dict[str, Any]] = None,
 ) -> DBConfig:
     """Parses a database URL and returns configured DATABASE dictionary."""
     settings = _convert_to_settings(
@@ -216,7 +216,7 @@ def parse(
     return parsed_config
 
 
-def _parse_option_values(values: List[str]) -> Union[OptionType, List[OptionType]]:
+def _parse_option_values(values: list[str]) -> OptionType | list[OptionType]:
     parsed_values = [_parse_value(v) for v in values]
     return parsed_values[0] if len(parsed_values) == 1 else parsed_values