Move imports in rpi_gpio (#27752)

* move imports for rpi_gpio

* fixed pylint error

* fix pylint error

* removed empty line

* add missing blank line

* sort with isort

homeassistant/components/rpi_gpio/__init__.py

@@ -1,6 +1,8 @@
 """Support for controlling GPIO pins of a Raspberry Pi."""
 import logging
 
+from RPi import GPIO  # pylint: disable=import-error
+
 from homeassistant.const import EVENT_HOMEASSISTANT_START, EVENT_HOMEASSISTANT_STOP
 
 _LOGGER = logging.getLogger(__name__)
@@ -10,7 +12,6 @@ DOMAIN = "rpi_gpio"
 
 def setup(hass, config):
     """Set up the Raspberry PI GPIO component."""
-    from RPi import GPIO  # pylint: disable=import-error
 
     def cleanup_gpio(event):
         """Stuff to do before stopping."""
@@ -27,34 +28,24 @@ def setup(hass, config):
 
 def setup_output(port):
     """Set up a GPIO as output."""
-    from RPi import GPIO  # pylint: disable=import-error
-
     GPIO.setup(port, GPIO.OUT)
 
 
 def setup_input(port, pull_mode):
     """Set up a GPIO as input."""
-    from RPi import GPIO  # pylint: disable=import-error
-
     GPIO.setup(port, GPIO.IN, GPIO.PUD_DOWN if pull_mode == "DOWN" else GPIO.PUD_UP)
 
 
 def write_output(port, value):
     """Write a value to a GPIO."""
-    from RPi import GPIO  # pylint: disable=import-error
-
     GPIO.output(port, value)
 
 
 def read_input(port):
     """Read a value from a GPIO."""
-    from RPi import GPIO  # pylint: disable=import-error
-
     return GPIO.input(port)
 
 
 def edge_detect(port, event_callback, bounce):
     """Add detection for RISING and FALLING events."""
-    from RPi import GPIO  # pylint: disable=import-error
-
     GPIO.add_event_detect(port, GPIO.BOTH, callback=event_callback, bouncetime=bounce)

homeassistant/components/rpi_gpio/binary_sensor.py

@@ -4,7 +4,7 @@ import logging
 import voluptuous as vol
 
 from homeassistant.components import rpi_gpio
-from homeassistant.components.binary_sensor import BinarySensorDevice, PLATFORM_SCHEMA
+from homeassistant.components.binary_sensor import PLATFORM_SCHEMA, BinarySensorDevice
 from homeassistant.const import DEVICE_DEFAULT_NAME
 import homeassistant.helpers.config_validation as cv
 

homeassistant/components/rpi_gpio/cover.py

@@ -4,9 +4,9 @@ from time import sleep
 
 import voluptuous as vol
 
-from homeassistant.components.cover import CoverDevice, PLATFORM_SCHEMA
-from homeassistant.const import CONF_NAME
 from homeassistant.components import rpi_gpio
+from homeassistant.components.cover import PLATFORM_SCHEMA, CoverDevice
+from homeassistant.const import CONF_NAME
 import homeassistant.helpers.config_validation as cv
 
 _LOGGER = logging.getLogger(__name__)