pylint: upgrade to 1.3.1

third_party/logilab/common/visitor.py

 # copyright 2003-2011 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
 # contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
 #
 # This file is part of logilab-common.
 #
 # logilab-common is free software: you can redistribute it and/or modify it under
 # the terms of the GNU Lesser General Public License as published by the Free
 # Software Foundation, either version 2.1 of the License, or (at your option) any
 # later version.
 #
@@ skipping 17 matching lines @@
 
 # Iterators ###################################################################
 class FilteredIterator(object):
 
     def __init__(self, node, list_func, filter_func=None):
         self._next = [(node, 0)]
         if filter_func is None:
             filter_func = no_filter
         self._list = list_func(node, filter_func)
 
-    def next(self):
+    def __next__(self):
         try:
             return self._list.pop(0)
         except :
             return None
 
+    next = __next__
+
 # Base Visitor ################################################################
 class Visitor(object):
 
     def __init__(self, iterator_class, filter_func=None):
         self._iter_class = iterator_class
         self.filter = filter_func
 
     def visit(self, node, *args, **kargs):
         """
         launch the visit on a given node
 
         call 'open_visit' before the beginning of the visit, with extra args
         given
         when all nodes have been visited, call the 'close_visit' method
         """
         self.open_visit(node, *args, **kargs)
         return self.close_visit(self._visit(node))
 
     def _visit(self, node):
         iterator = self._get_iterator(node)
-        n = iterator.next()
+        n = next(iterator)
         while n:
             result = n.accept(self)
-            n = iterator.next()
+            n = next(iterator)
         return result
 
     def _get_iterator(self, node):
         return self._iter_class(node, self.filter)
 
     def open_visit(self, *args, **kargs):
         """
         method called at the beginning of the visit
         """
         pass
@@ skipping 20 matching lines @@
         except:
             return self.__class__.__name__.lower()
 
     def accept(self, visitor, *args, **kwargs):
         func = getattr(visitor, 'visit_%s' % self.get_visit_name())
         return func(self, *args, **kwargs)
 
     def leave(self, visitor, *args, **kwargs):
         func = getattr(visitor, 'leave_%s' % self.get_visit_name())
         return func(self, *args, **kwargs)