--- a/sat/tools/trigger.py	Wed Jun 27 07:51:29 2018 +0200
+++ b/sat/tools/trigger.py	Wed Jun 27 20:14:46 2018 +0200
@@ -21,6 +21,7 @@
 
 from sat.core.i18n import _
 from sat.core.log import getLogger
+
 log = getLogger(__name__)
 
 
@@ -30,6 +31,7 @@
 
 class SkipOtherTriggers(Exception):
     """ Exception to raise if normal behaviour must be followed instead of following triggers list """
+
     pass
 
 
@@ -37,8 +39,8 @@
     """This class manage triggers: code which interact to change the behaviour of SàT"""
 
     try:  # FIXME: to be removed when a better solution is found
-        MIN_PRIORITY = float('-inf')
-        MAX_PRIORITY = float('+inf')
+        MIN_PRIORITY = float("-inf")
+        MAX_PRIORITY = float("+inf")
     except:  # XXX: Pyjamas will bug if you specify ValueError here
         # Pyjamas uses the JS Float class
         MIN_PRIORITY = Number.NEGATIVE_INFINITY
@@ -57,14 +59,20 @@
         """
         if point_name not in self.__triggers:
             self.__triggers[point_name] = []
-        if priority != 0 and priority in [trigger_tuple[0] for trigger_tuple in self.__triggers[point_name]]:
+        if priority != 0 and priority in [
+            trigger_tuple[0] for trigger_tuple in self.__triggers[point_name]
+        ]:
             if priority in (self.MIN_PRIORITY, self.MAX_PRIORITY):
                 log.warning(_(u"There is already a bound priority [%s]") % point_name)
             else:
-                log.debug(_(u"There is already a trigger with the same priority [%s]") % point_name)
+                log.debug(
+                    _(u"There is already a trigger with the same priority [%s]")
+                    % point_name
+                )
         self.__triggers[point_name].append((priority, callback))
-        self.__triggers[point_name].sort(key=lambda trigger_tuple:
-                                         trigger_tuple[0], reverse=True)
+        self.__triggers[point_name].sort(
+            key=lambda trigger_tuple: trigger_tuple[0], reverse=True
+        )
 
     def remove(self, point_name, callback):
         """Remove a trigger from a point