Fixed linting errors

homeassistant/components/notify/slack.py

@@ -0,0 +1,94 @@
+"""
+homeassistant.components.notify.slack
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Slack platform for notify component.
+
+Configuration:
+
+To use the Slack notifier you will need to add something like the following
+to your config/configuration.yaml
+
+notify:
+    platform: slack
+    api_key: ABCDEFGHJKLMNOPQRSTUVXYZ
+    default_channel: '#general'
+
+Variables:
+
+api_key
+*Required
+The slack API token to use for sending slack messages.
+You can get your slack API token here https://api.slack.com/web?sudo=1
+
+default_channel
+*Required
+The default channel to post to if no channel is explicitly specified when
+sending the notification message.
+
+"""
+import logging
+
+from homeassistant.helpers import validate_config
+from homeassistant.components.notify import (
+    DOMAIN, BaseNotificationService)
+from homeassistant.const import CONF_API_KEY
+
+REQUIREMENTS = ['slacker>=0.6.8']
+_LOGGER = logging.getLogger(__name__)
+
+
+# pylint: disable=unused-variable
+def get_service(hass, config):
+    """ Get the slack notification service. """
+
+    if not validate_config(config,
+                           {DOMAIN: ['default_channel', CONF_API_KEY]},
+                           _LOGGER):
+        return None
+
+    try:
+        # pylint: disable=no-name-in-module, unused-variable
+        from slacker import Error as SlackError
+
+    except ImportError:
+        _LOGGER.exception(
+            "Unable to import slacker. "
+            "Did you maybe not install the 'slacker.py' package?")
+
+        return None
+
+    try:
+        api_token = config[DOMAIN].get(CONF_API_KEY)
+
+        return SlackNotificationService(
+            config[DOMAIN]['default_channel'],
+            api_token)
+
+    except SlackError as ex:
+        _LOGGER.error(
+            "Slack authentication failed")
+        _LOGGER.exception(ex)
+
+
+# pylint: disable=too-few-public-methods
+class SlackNotificationService(BaseNotificationService):
+    """ Implements notification service for Slack. """
+
+    def __init__(self, default_channel, api_token):
+        from slacker import Slacker
+        self._default_channel = default_channel
+        self._api_token = api_token
+        self.slack = Slacker(self._api_token)
+        self.slack.auth.test()
+
+    def send_message(self, message="", **kwargs):
+        """ Send a message to a user. """
+
+        from slacker import Error as SlackError
+        channel = kwargs.get('channel', self._default_channel)
+        try:
+            self.slack.chat.post_message(channel, message)
+        except SlackError as ex:
+            _LOGGER.exception("Could not send slack notification")
+            _LOGGER.exception(ex)

requirements.txt

@@ -91,3 +91,6 @@ pywemo>=0.1
 
 # Wink (*.wink)
 https://github.com/balloob/python-wink/archive/master.zip#pywink>=0.1
+
+# Slack notifier
+slacker>=0.6.8