Follow PEP 484 - no implicit optionals

freqtrade/rpc/rpc.py

@@ -945,7 +945,7 @@ class RPC:
         resp['errors'] = errors
         return resp
 
-    def _rpc_blacklist(self, add: List[str] = None) -> Dict:
+    def _rpc_blacklist(self, add: Optional[List[str]] = None) -> Dict:
         """ Returns the currently active blacklist"""
         errors = {}
         if add:

freqtrade/rpc/telegram.py

@@ -1605,7 +1605,7 @@ class Telegram(RPCHandler):
 
     def _send_msg(self, msg: str, parse_mode: str = ParseMode.MARKDOWN,
                   disable_notification: bool = False,
-                  keyboard: List[List[InlineKeyboardButton]] = None,
+                  keyboard: Optional[List[List[InlineKeyboardButton]]] = None,
                   callback_path: str = "",
                   reload_able: bool = False,
                   query: Optional[CallbackQuery] = None) -> None: