remove trailing spaces

pymath/calculus/explicable.py

@@ -71,23 +71,23 @@ class Renderable(object):
         except AttributeError:
             return False
 
-    
-        
+
+
 class Explicable(Renderable):
 
     """ An Explicable object is an object which can be explicable!
-    
+
     It's a parent class of a more classical Expression, Fraction and Polynom (and later square root)
     Child class will have the following method
         * explain: Generator which return steps which leed to himself
-    
+
     """
     def __init__(self, *args, **kwargs):
         self.steps = []
 
     def explain(self, noself = True):
         """ Generate and render steps  which leed to itself
-        
+
         :param noself: does explain return self
 
         """
@@ -125,11 +125,11 @@ class Explicable(Renderable):
             else:
                 return False
 
-        
+
 
 
 
 # -----------------------------
 # Reglages pour 'vim'
 # vim:set autoindent expandtab tabstop=4 shiftwidth=4:
-# cursor: 16 del 
+# cursor: 16 del