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homeassistant/components/file/notify.py

@@ -9,14 +9,20 @@ import homeassistant.helpers.config_validation as cv
 import homeassistant.util.dt as dt_util
 
 from homeassistant.components.notify import (
-    ATTR_TITLE, ATTR_TITLE_DEFAULT, PLATFORM_SCHEMA, BaseNotificationService)
+    ATTR_TITLE,
+    ATTR_TITLE_DEFAULT,
+    PLATFORM_SCHEMA,
+    BaseNotificationService,
+)
 
-CONF_TIMESTAMP = 'timestamp'
+CONF_TIMESTAMP = "timestamp"
 
-PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend({
-    vol.Required(CONF_FILENAME): cv.string,
-    vol.Optional(CONF_TIMESTAMP, default=False): cv.boolean,
-})
+PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend(
+    {
+        vol.Required(CONF_FILENAME): cv.string,
+        vol.Optional(CONF_TIMESTAMP, default=False): cv.boolean,
+    }
+)
 
 _LOGGER = logging.getLogger(__name__)
 
@@ -39,16 +45,17 @@ class FileNotificationService(BaseNotificationService):
 
     def send_message(self, message="", **kwargs):
         """Send a message to a file."""
-        with open(self.filepath, 'a') as file:
+        with open(self.filepath, "a") as file:
             if os.stat(self.filepath).st_size == 0:
-                title = '{} notifications (Log started: {})\n{}\n'.format(
+                title = "{} notifications (Log started: {})\n{}\n".format(
                     kwargs.get(ATTR_TITLE, ATTR_TITLE_DEFAULT),
                     dt_util.utcnow().isoformat(),
-                    '-' * 80)
+                    "-" * 80,
+                )
                 file.write(title)
 
             if self.add_timestamp:
-                text = '{} {}\n'.format(dt_util.utcnow().isoformat(), message)
+                text = "{} {}\n".format(dt_util.utcnow().isoformat(), message)
             else:
-                text = '{}\n'.format(message)
+                text = "{}\n".format(message)
             file.write(text)