removing legacy type hints (<v3.9)

src/pydase/data_service/abstract_data_service.py

@@ -1,15 +1,8 @@
 from __future__ import annotations
 
-import sys
 from abc import ABC
 from typing import TYPE_CHECKING, Any
 
-if sys.version_info < (3, 9):
-    from typing import Dict  # noqa
-else:
-    Dict = dict
-
-
 if TYPE_CHECKING:
     from .callback_manager import CallbackManager
     from .data_service import DataService
@@ -20,4 +13,4 @@ class AbstractDataService(ABC):
     __root__: DataService
     _task_manager: TaskManager
     _callback_manager: CallbackManager
-    _autostart_tasks: Dict[str, tuple[Any]]
+    _autostart_tasks: dict[str, tuple[Any]]

src/pydase/data_service/callback_manager.py

@@ -1,15 +1,7 @@
 from __future__ import annotations
 
 import inspect
-import sys
-
-if sys.version_info < (3, 9):
-    from typing import Callable, Dict  # noqa
-else:
 from collections.abc import Callable
-
-    Dict = dict
-
 from typing import TYPE_CHECKING, Any, Union
 
 from loguru import logger
@@ -45,7 +37,7 @@ class CallbackManager:
     This implementation follows the observer pattern, with the DataService instance as
     the "subject" and the callback functions as the "observers".
     """
-    _list_mapping: Dict[int, DataServiceList] = {}
+    _list_mapping: dict[int, DataServiceList] = {}
     """
     A dictionary mapping the id of the original lists to the corresponding
     DataServiceList instances.

src/pydase/data_service/data_service.py

@@ -2,16 +2,9 @@ import asyncio
 import inspect
 import json
 import os
-import sys
 from enum import Enum
 from typing import Any, Optional, cast, get_type_hints
 
-if sys.version_info < (3, 9):
-    from typing import Dict, List  # noqa
-else:
-    Dict = dict
-    List = list
-
 import rpyc
 from loguru import logger
 
@@ -35,7 +28,7 @@ from pydase.utils.warnings import (
 )
 
 
-def process_callable_attribute(attr: Any, args: Dict[str, Any]) -> Any:
+def process_callable_attribute(attr: Any, args: dict[str, Any]) -> Any:
     converted_args_or_error_msg = convert_arguments_to_hinted_types(
         args, get_type_hints(attr)
     )
@@ -101,7 +94,7 @@ class DataService(rpyc.Service, AbstractDataService):
         attr: Any,
         value: Any,
         index: Optional[int],
-        path_list: List[str],
+        path_list: list[str],
     ) -> None:
         if isinstance(attr, Enum):
             update_value_if_changed(target_obj, attr_name, attr.__class__[value])
@@ -142,7 +135,7 @@ class DataService(rpyc.Service, AbstractDataService):
                 with open(self._filename, "r") as f:
                     # Load JSON data from file and update class attributes with these
                     # values
-                    self.load_DataService_from_JSON(cast(Dict[str, Any], json.load(f)))
+                    self.load_DataService_from_JSON(cast(dict[str, Any], json.load(f)))
 
     def write_to_file(self) -> None:
         """
@@ -160,7 +153,7 @@ class DataService(rpyc.Service, AbstractDataService):
                 'Skipping "write_to_file"...'
             )
 
-    def load_DataService_from_JSON(self, json_dict: Dict[str, Any]) -> None:
+    def load_DataService_from_JSON(self, json_dict: dict[str, Any]) -> None:
         # Traverse the serialized representation and set the attributes of the class
         serialized_class = self.serialize()
         for path in generate_paths_from_DataService_dict(json_dict):
@@ -196,7 +189,7 @@ class DataService(rpyc.Service, AbstractDataService):
                     f'"{class_value_type}". Ignoring value from JSON file...'
                 )
 
-    def serialize(self) -> Dict[str, Dict[str, Any]]:  # noqa
+    def serialize(self) -> dict[str, dict[str, Any]]:  # noqa
         """
         Serializes the instance into a dictionary, preserving the structure of the
         instance.
@@ -225,7 +218,7 @@ class DataService(rpyc.Service, AbstractDataService):
         Returns:
             dict: The serialized instance.
         """
-        result: Dict[str, Dict[str, Any]] = {}
+        result: dict[str, dict[str, Any]] = {}
 
         # Get the dictionary of the base class
         base_set = set(type(super()).__dict__)
@@ -302,7 +295,7 @@ class DataService(rpyc.Service, AbstractDataService):
                 sig = inspect.signature(value)
 
                 # Store parameters and their anotations in a dictionary
-                parameters: Dict[str, Optional[str]] = {}
+                parameters: dict[str, Optional[str]] = {}
                 for k, v in sig.parameters.items():
                     annotation = v.annotation
                     if annotation is not inspect._empty:
@@ -363,7 +356,7 @@ class DataService(rpyc.Service, AbstractDataService):
 
     def update_DataService_attribute(
         self,
-        path_list: List[str],
+        path_list: list[str],
         attr_name: str,
         value: Any,
     ) -> None:

src/pydase/data_service/data_service_list.py

@@ -1,12 +1,4 @@
-import sys
-
-if sys.version_info < (3, 9):
-    from typing import Callable, List  # noqa
-else:
 from collections.abc import Callable
-
-    List = list
-
 from typing import Any, Union
 
 from pydase.utils.warnings import (
@@ -38,11 +30,11 @@ class DataServiceList(list):
 
     def __init__(
         self,
-        *args: List[Any],
+        *args: list[Any],
-        callback: Union[List[Callable[[int, Any], None]], None] = None,
+        callback: Union[list[Callable[[int, Any], None]], None] = None,
         **kwargs: Any,
     ) -> None:
-        self.callbacks: List[Callable[[int, Any], None]] = []
+        self.callbacks: list[Callable[[int, Any], None]] = []
         if isinstance(callback, list):
             self.callbacks = callback
 

src/pydase/data_service/task_manager.py

@@ -2,13 +2,7 @@ from __future__ import annotations
 
 import asyncio
 import inspect
-import sys
-
-if sys.version_info < (3, 9):
-    from typing import Callable  # noqa
-else:
 from collections.abc import Callable
-
 from functools import wraps
 from typing import TYPE_CHECKING, Any, TypedDict, Union
 

src/pydase/server/server.py

@@ -1,20 +1,12 @@
 import asyncio
 import os
 import signal
-import sys
 import threading
 from concurrent.futures import ThreadPoolExecutor
 from enum import Enum
 from types import FrameType
 from typing import Any, Optional, Protocol, TypedDict, Union
 
-if sys.version_info < (3, 9):
-    from typing import Dict, List, Type  # noqa
-else:
-    Dict = dict
-    List = list
-    Type = type
-
 import uvicorn
 from loguru import logger
 from rpyc import (
@@ -87,9 +79,9 @@ class AdditionalServer(TypedDict):
     it's instantiated.
     """
 
-    server: Type[AdditionalServerProtocol]
+    server: type[AdditionalServerProtocol]
     port: int
-    kwargs: Dict[str, Any]
+    kwargs: dict[str, Any]
 
 
 class Server:
@@ -171,8 +163,8 @@ class Server:
         enable_rpc: bool = True,
         enable_web: bool = True,
         use_forking_server: bool = False,
-        web_settings: Dict[str, Any] = {},
+        web_settings: dict[str, Any] = {},
-        additional_servers: List[AdditionalServer] = [],
+        additional_servers: list[AdditionalServer] = [],
         **kwargs: Any,
     ) -> None:
         self._service = service
@@ -187,9 +179,9 @@ class Server:
         self._rpc_server_type = ForkingServer if use_forking_server else ThreadedServer
         self._additional_servers = additional_servers
         self.should_exit = False
-        self.servers: Dict[str, asyncio.Future[Any]] = {}
+        self.servers: dict[str, asyncio.Future[Any]] = {}
         self.executor: Union[ThreadPoolExecutor, None] = None
-        self._info: Dict[str, Any] = {
+        self._info: dict[str, Any] = {
             "name": self._service.get_service_name(),
             "version": __version__,
             "rpc_port": self._rpc_port,
@@ -394,7 +386,7 @@ class Server:
             self.should_exit = True
 
     def custom_exception_handler(
-        self, loop: asyncio.AbstractEventLoop, context: Dict[str, Any]
+        self, loop: asyncio.AbstractEventLoop, context: dict[str, Any]
     ) -> None:
         # if any background task creates an unhandled exception, shut down the entire
         # loop. It's possible we don't want to do this, maybe make this optional in the

src/pydase/server/web_server.py

@@ -1,12 +1,6 @@
-import sys
 from pathlib import Path
 from typing import Any, TypedDict, Union
 
-if sys.version_info < (3, 9):
-    from typing import Dict  # noqa
-else:
-    Dict = dict
-
 import socketio
 from fastapi import FastAPI
 from fastapi.middleware.cors import CORSMiddleware
@@ -56,7 +50,7 @@ class WebAPI:
         frontend: Union[str, Path, None] = None,
         css: Union[str, Path, None] = None,
         enable_CORS: bool = True,
-        info: Dict[str, Any] = {},
+        info: dict[str, Any] = {},
         *args: Any,
         **kwargs: Any,
     ):
@@ -113,11 +107,11 @@ class WebAPI:
             return self.service.get_service_name()
 
         @app.get("/info")
-        def info() -> Dict[str, Any]:
+        def info() -> dict[str, Any]:
             return self.info
 
         @app.get("/service-properties")
-        def service_properties() -> Dict[str, Any]:
+        def service_properties() -> dict[str, Any]:
             return self.service.serialize()
 
         app.mount(

src/pydase/utils/helpers.py

@@ -1,21 +1,13 @@
 import re
-import sys
 from itertools import chain
 from typing import Any, Optional, Union, cast
 
-if sys.version_info < (3, 9):
-    from typing import Dict, List, Tuple  # noqa
-else:
-    Dict = dict
-    List = list
-    Tuple = tuple
-
 from loguru import logger
 
 STANDARD_TYPES = ("int", "float", "bool", "str", "Enum", "NoneType", "Quantity")
 
 
-def get_class_and_instance_attributes(obj: Any) -> Dict[str, Any]:
+def get_class_and_instance_attributes(obj: Any) -> dict[str, Any]:
     """Dictionary containing all attributes (both instance and class level) of a
     given object.
 
@@ -30,7 +22,7 @@ def get_class_and_instance_attributes(obj: Any) -> Dict[str, Any]:
     return attrs
 
 
-def get_object_attr_from_path(target_obj: Any, path: List[str]) -> Any:
+def get_object_attr_from_path(target_obj: Any, path: list[str]) -> Any:
     """
     Traverse the object tree according to the given path.
 
@@ -65,7 +57,7 @@ def get_object_attr_from_path(target_obj: Any, path: List[str]) -> Any:
 
 def generate_paths_from_DataService_dict(
     data: dict, parent_path: str = ""
-) -> List[str]:
+) -> list[str]:
     """
     Recursively generate paths from a dictionary representing a DataService object.
 
@@ -135,8 +127,8 @@ def generate_paths_from_DataService_dict(
 
 
 def extract_dict_or_list_entry(
-    data: Dict[str, Any], key: str
+    data: dict[str, Any], key: str
-) -> Union[Dict[str, Any], None]:
+) -> Union[dict[str, Any], None]:
     """
     Extract a nested dictionary or list entry based on the provided key.
 
@@ -188,7 +180,7 @@ def extract_dict_or_list_entry(
         else:
             logger.error(f"Invalid index format in key: {key}")
 
-    current_data: Union[Dict[str, Any], List[Dict[str, Any]], None] = data.get(
+    current_data: Union[dict[str, Any], list[dict[str, Any]], None] = data.get(
         attr_name, None
     )
     if not isinstance(current_data, dict):
@@ -207,14 +199,14 @@ def extract_dict_or_list_entry(
     # When the attribute is a class instance, the attributes are nested in the
     # "value" key
     if current_data["type"] not in STANDARD_TYPES:
-        current_data = cast(Dict[str, Any], current_data.get("value", None))  # type: ignore
+        current_data = cast(dict[str, Any], current_data.get("value", None))  # type: ignore
         assert isinstance(current_data, dict)
 
     return current_data
 
 
 def get_nested_value_from_DataService_by_path_and_key(
-    data: Dict[str, Any], path: str, key: str = "value"
+    data: dict[str, Any], path: str, key: str = "value"
 ) -> Any:
     """
     Get the value associated with a specific key from a dictionary given a path.
@@ -260,8 +252,8 @@ def get_nested_value_from_DataService_by_path_and_key(
     """
 
     # Split the path into parts
-    parts: List[str] = re.split(r"\.", path)  # Split by '.'
+    parts: list[str] = re.split(r"\.", path)  # Split by '.'
-    current_data: Union[Dict[str, Any], None] = data
+    current_data: Union[dict[str, Any], None] = data
 
     for part in parts:
         if current_data is None:
@@ -273,8 +265,8 @@ def get_nested_value_from_DataService_by_path_and_key(
 
 
 def convert_arguments_to_hinted_types(
-    args: Dict[str, Any], type_hints: Dict[str, Any]
+    args: dict[str, Any], type_hints: dict[str, Any]
-) -> Union[Dict[str, Any], str]:
+) -> Union[dict[str, Any], str]:
     """
     Convert the given arguments to their types hinted in the type_hints dictionary.
 
@@ -352,7 +344,7 @@ def update_value_if_changed(
         logger.error(f"Incompatible arguments: {target}, {attr_name_or_index}.")
 
 
-def parse_list_attr_and_index(attr_string: str) -> Tuple[str, Optional[int]]:
+def parse_list_attr_and_index(attr_string: str) -> tuple[str, Optional[int]]:
     """
     Parses an attribute string and extracts a potential list attribute name and its
     index.
@@ -391,7 +383,7 @@ def parse_list_attr_and_index(attr_string: str) -> Tuple[str, Optional[int]]:
     return attr_name, index
 
 
-def get_component_class_names() -> List[str]:
+def get_component_class_names() -> list[str]:
     """
     Returns the names of the component classes in a list.
 

tests/__init__.py

@@ -1,10 +1,4 @@
-import sys
-
-if sys.version_info < (3, 10):
-    from typing import Generator
-else:
 from collections.abc import Generator
-
 from typing import Any
 
 import pytest