Fix PEP257 issues

homeassistant/components/device_tracker/nmap_tracker.py

@@ -28,7 +28,7 @@ REQUIREMENTS = ['python-nmap==0.4.3']
 
 
 def get_scanner(hass, config):
-    """Validates configuration and returns a Nmap scanner."""
+    """Validate the configuration and return a Nmap scanner."""
     if not validate_config(config, {DOMAIN: [CONF_HOSTS]},
                            _LOGGER):
         return None
@@ -54,7 +54,9 @@ def _arp(ip_address):
 
 class NmapDeviceScanner(object):
     """This class scans for devices using nmap."""
+
     def __init__(self, config):
+        """Initialize the scanner."""
         self.last_results = []
 
         self.hosts = config[CONF_HOSTS]
@@ -65,15 +67,13 @@ class NmapDeviceScanner(object):
         _LOGGER.info("nmap scanner initialized")
 
     def scan_devices(self):
-        """
-        Scans for new devices and return a list containing found device ids.
-        """
+        """Scan for new devices and return a list with found device IDs."""
         self._update_info()
 
         return [device.mac for device in self.last_results]
 
     def get_device_name(self, mac):
-        """Returns the name of the given device or None if we don't know."""
+        """Return the name of the given device or None if we don't know."""
         filter_named = [device.name for device in self.last_results
                         if device.mac == mac]
 
@@ -84,8 +84,8 @@ class NmapDeviceScanner(object):
 
     @Throttle(MIN_TIME_BETWEEN_SCANS)
     def _update_info(self):
-        """
-        Scans the network for devices.
+        """Scan the network for devices.
+
         Returns boolean if scanning successful.
         """
         _LOGGER.info("Scanning")