First tox fixes

custom_components/localtuya/__init__.py

@@ -1,4 +1,4 @@
-"""The LocalTuya integration. """
+"""The LocalTuya integration."""
 import asyncio
 import logging
 import time

custom_components/localtuya/cloud_api.py

@@ -10,6 +10,7 @@ import requests
 
 # Signature algorithm.
 def calc_sign(msg, key):
+    """Calculate signature for request."""
     sign = (
         hmac.new(
             msg=bytes(msg, "latin-1"),
@@ -36,6 +37,7 @@ class TuyaCloudApi:
         self._device_list = {}
 
     def generate_payload(self, method, t, url, headers, body=None):
+        """Generate signed payload for requests."""
         payload = self._client_id + self._access_token + t
 
         payload += method + "\n"

custom_components/localtuya/common.py

@@ -218,6 +218,7 @@ class TuyaDevice(pytuya.TuyaListener, pytuya.ContextualLogger):
         self._connect_task = None
 
     async def update_local_key(self):
+        """Retrieve updated local_key from Cloud API and update the config_entry."""
         dev_id = self._dev_config_entry[CONF_DEVICE_ID]
         await self._hass.data[DOMAIN][DATA_CLOUD].async_get_devices_list()
         cloud_devs = self._hass.data[DOMAIN][DATA_CLOUD]._device_list

custom_components/localtuya/config_flow.py

@@ -593,6 +593,7 @@ class LocalTuyaOptionsFlowHandler(config_entries.OptionsFlow):
         return self.async_show_form(step_id="pick_entity_type", data_schema=schema)
 
     def available_dps_strings(self):
+        """Return list of DPs use by the device's entities."""
         available_dps = []
         used_dps = [str(entity[CONF_ID]) for entity in self.entities]
         for dp_string in self.dps_strings: