improve conformation to PEP8

custom_components/flair/util.py

@@ -1,9 +1,8 @@
-""" Utilities for Flair Integration """
+"""Utilities for Flair Integration"""
 from __future__ import annotations
 
-
-
 import async_timeout
+
 from flairaio import FlairClient
 from flairaio.exceptions import FlairAuthError
 from flairaio.model import Structure, User
@@ -13,8 +12,10 @@
 
 from .const import LOGGER, FLAIR_ERRORS, TIMEOUT
 
+
 async def async_validate_api(hass: HomeAssistant, client_id: str, client_secret: str) -> bool:
-    """ Get data from API. """
+    """Get data from API."""
+
     client = FlairClient(
         client_id,
         client_secret,
@@ -28,13 +29,14 @@ async def async_validate_api(hass: HomeAssistant, client_id: str, client_secret:
             structures_query = await client.get_structures()
     except FlairAuthError as err:
         LOGGER.error(f'Could not authenticate on Flair servers: {err}')
-        raise FlairAuthError from err
+        raise FlairAuthError(err)
     except FLAIR_ERRORS as err:
         LOGGER.error(f'Failed to get information from Flair servers: {err}')
         raise ConnectionError from err
 
     users: dict[str, User] = users_query.users
     structures: dict[str, Structure] = structures_query.structures
+
     if not users:
         LOGGER.error("Could not retrieve any users from Flair servers")
         raise NoUserError
@@ -47,5 +49,6 @@ async def async_validate_api(hass: HomeAssistant, client_id: str, client_secret:
 class NoUserError(Exception):
     """ No User from Flair API. """
 
+
 class NoStructuresError(Exception):
     """ No Litter Boxes from PurrSong API. """