Yeelight fix updates on hsv mode (#9093)

* cast strings to integers for hsv_to_rgb conversion, fixes #6473

* remove type_checking, flake8 does not like that.

* use hsv_to_rgb to convert to correct rgb value

homeassistant/components/light/yeelight.py

@@ -6,6 +6,7 @@ https://home-assistant.io/components/light.yeelight/
 """
 import logging
 import colorsys
+from typing import Tuple
 
 import voluptuous as vol
 
@@ -89,6 +90,14 @@ YEELIGHT_EFFECT_LIST = [
     EFFECT_STOP]
 
 
+# Travis-CI runs too old astroid https://github.com/PyCQA/pylint/issues/1212
+# pylint: disable=invalid-sequence-index
+def hsv_to_rgb(hsv: Tuple[float, float, float]) -> Tuple[int, int, int]:
+    """Convert HSV tuple (degrees, %, %) to RGB (values 0-255)."""
+    red, green, blue = colorsys.hsv_to_rgb(hsv[0]/360, hsv[1]/100, hsv[2]/100)
+    return int(red * 255), int(green * 255), int(blue * 255)
+
+
 def _cmd(func):
     """Define a wrapper to catch exceptions from the bulb."""
     def _wrap(self, *args, **kwargs):
@@ -192,10 +201,10 @@ class YeelightLight(Light):
         if color_mode == 2:  # color temperature
             return color_temperature_to_rgb(self.color_temp)
         if color_mode == 3:  # hsv
-            hue = self._properties.get('hue')
-            sat = self._properties.get('sat')
-            val = self._properties.get('bright')
-            return colorsys.hsv_to_rgb(hue, sat, val)
+            hue = int(self._properties.get('hue'))
+            sat = int(self._properties.get('sat'))
+            val = int(self._properties.get('bright'))
+            return hsv_to_rgb((hue, sat, val))
 
         rgb = int(rgb)
         blue = rgb & 0xff
@@ -214,7 +223,7 @@ class YeelightLight(Light):
         return self._bulb.last_properties
 
     @property
-    def _bulb(self) -> object:
+    def _bulb(self) -> 'yeelight.Bulb':
         import yeelight
         if self._bulb_device is None:
             try: