Removed typing.Final from some of the most commonly used modules.

`typing.Final` is not defined on Python < 3.8.

platypush/builder/_base.py

@@ -5,7 +5,7 @@ import logging
 import os
 import pathlib
 import sys
-from typing import Final, Optional, Sequence
+from typing import Optional, Sequence
 
 from platypush.config import Config
 from platypush.utils.manifest import (
@@ -29,7 +29,7 @@ class BaseBuilder(ABC):
     and :module:`platypush.platydock` modules/scripts.
     """
 
-    REPO_URL: Final[str] = 'https://github.com/BlackLight/platypush.git'
+    REPO_URL: str = 'https://github.com/BlackLight/platypush.git'
     """
     We use the Github URL here rather than the self-hosted Gitea URL to prevent
     too many requests to the Gitea server.

platypush/bus/redis.py

@@ -1,6 +1,6 @@
 import logging
 import threading
-from typing import Final, Optional
+from typing import Optional
 
 from platypush.bus import Bus
 from platypush.message import Message
@@ -13,7 +13,7 @@ class RedisBus(Bus):
     Overrides the in-process in-memory local bus with a Redis bus
     """
 
-    DEFAULT_REDIS_QUEUE: Final[str] = 'platypush/bus'
+    DEFAULT_REDIS_QUEUE: str = 'platypush/bus'
 
     def __init__(self, *args, on_message=None, redis_queue=None, **kwargs):
         from platypush.utils import get_redis

platypush/entities/_base.py

@@ -7,7 +7,7 @@ import subprocess
 import sys
 import types
 from datetime import datetime
-from typing import Callable, Dict, Final, List, Optional, Set, Type, Tuple, Any
+from typing import Callable, Dict, List, Optional, Set, Type, Tuple, Any
 
 import pkgutil
 
@@ -41,7 +41,7 @@ EntityKey = Tuple[str, str]
 EntityMapping = Dict[EntityKey, 'Entity']
 """ Internal mapping for entities used for deduplication/merge/upsert. """
 
-_import_error_ignored_modules: Final[Set[str]] = {'bluetooth'}
+_import_error_ignored_modules: Set[str] = {'bluetooth'}
 """
 ImportError exceptions will be ignored for these entity submodules when
 imported dynamically. An ImportError for these modules means that some optional

platypush/plugins/mqtt/_client.py

@@ -2,14 +2,14 @@ from enum import IntEnum
 import logging
 import os
 import threading
-from typing import Any, Callable, Dict, Final, Iterable, Optional, Union
+from typing import Any, Callable, Dict, Iterable, Optional, Union
 
 import paho.mqtt.client as mqtt
 
 from platypush.config import Config
 
 MqttCallback = Callable[["MqttClient", Any, mqtt.MQTTMessage], Any]
-DEFAULT_TIMEOUT: Final[int] = 30
+DEFAULT_TIMEOUT: int = 30
 
 
 class MqttClient(mqtt.Client, threading.Thread):