Move blackbird imports (#27849)

* Move imports in blackbird component

* fixed tests after import move to top level

homeassistant/components/blackbird/media_player.py

@@ -2,9 +2,11 @@
 import logging
 import socket
 
+from pyblackbird import get_blackbird
+from serial import SerialException
 import voluptuous as vol
 
-from homeassistant.components.media_player import MediaPlayerDevice, PLATFORM_SCHEMA
+from homeassistant.components.media_player import PLATFORM_SCHEMA, MediaPlayerDevice
 from homeassistant.components.media_player.const import (
     DOMAIN,
     SUPPORT_SELECT_SOURCE,
@@ -72,9 +74,6 @@ def setup_platform(hass, config, add_entities, discovery_info=None):
     port = config.get(CONF_PORT)
     host = config.get(CONF_HOST)
 
-    from pyblackbird import get_blackbird
-    from serial import SerialException
-
     connection = None
     if port is not None:
         try:

tests/components/blackbird/test_media_player.py

@@ -180,7 +180,10 @@ class TestBlackbirdMediaPlayer(unittest.TestCase):
         self.hass = tests.common.get_test_home_assistant()
         self.hass.start()
         # Note, source dictionary is unsorted!
-        with mock.patch("pyblackbird.get_blackbird", new=lambda *a: self.blackbird):
+        with mock.patch(
+            "homeassistant.components.blackbird.media_player.get_blackbird",
+            new=lambda *a: self.blackbird,
+        ):
             setup_platform(
                 self.hass,
                 {