Move imports in nest component (#27778)

homeassistant/components/nest/__init__.py

@@ -4,6 +4,8 @@ import socket
 from datetime import datetime, timedelta
 import threading
 
+from nest import Nest
+from nest.nest import AuthorizationError, APIError
 import voluptuous as vol
 
 from homeassistant import config_entries
@@ -142,7 +144,6 @@ async def async_setup(hass, config):
 
 async def async_setup_entry(hass, entry):
     """Set up Nest from a config entry."""
-    from nest import Nest
 
     nest = Nest(access_token=entry.data["tokens"]["access_token"])
 
@@ -286,8 +287,6 @@ class NestDevice:
 
     def initialize(self):
         """Initialize Nest."""
-        from nest.nest import AuthorizationError, APIError
-
         try:
             # Do not optimize next statement, it is here for initialize
             # persistence Nest API connection.
@@ -302,8 +301,6 @@ class NestDevice:
 
     def structures(self):
         """Generate a list of structures."""
-        from nest.nest import AuthorizationError, APIError
-
         try:
             for structure in self.nest.structures:
                 if structure.name not in self.local_structure:
@@ -332,8 +329,6 @@ class NestDevice:
 
     def _devices(self, device_type):
         """Generate a list of Nest devices."""
-        from nest.nest import AuthorizationError, APIError
-
         try:
             for structure in self.nest.structures:
                 if structure.name not in self.local_structure:

homeassistant/components/nest/climate.py

@@ -1,6 +1,7 @@
 """Support for Nest thermostats."""
 import logging
 
+from nest.nest import APIError
 import voluptuous as vol
 
 from homeassistant.components.climate import PLATFORM_SCHEMA, ClimateDevice
@@ -232,7 +233,6 @@ class NestThermostat(ClimateDevice):
 
     def set_temperature(self, **kwargs):
         """Set new target temperature."""
-        import nest
 
         temp = None
         target_temp_low = kwargs.get(ATTR_TARGET_TEMP_LOW)
@@ -247,7 +247,7 @@ class NestThermostat(ClimateDevice):
         try:
             if temp is not None:
                 self.device.target = temp
-        except nest.nest.APIError as api_error:
+        except APIError as api_error:
             _LOGGER.error("An error occurred while setting temperature: %s", api_error)
             # restore target temperature
             self.schedule_update_ha_state(True)

homeassistant/components/nest/local_auth.py

@@ -2,6 +2,8 @@
 import asyncio
 from functools import partial
 
+from nest.nest import NestAuth, AUTHORIZE_URL, AuthorizationError
+
 from homeassistant.core import callback
 from . import config_flow
 from .const import DOMAIN
@@ -21,14 +23,11 @@ def initialize(hass, client_id, client_secret):
 
 async def generate_auth_url(client_id, flow_id):
     """Generate an authorize url."""
-    from nest.nest import AUTHORIZE_URL
-
     return AUTHORIZE_URL.format(client_id, flow_id)
 
 
 async def resolve_auth_code(hass, client_id, client_secret, code):
     """Resolve an authorization code."""
-    from nest.nest import NestAuth, AuthorizationError
 
     result = asyncio.Future()
     auth = NestAuth(