small doc fix in nbconvert

IPython/nbconvert/transformers/base.py

@@ -1,110 +1,110 b''
 """
 Module that re-groups transformer that would be applied to ipynb files
 before going through the templating machinery.
 
 It exposes a convenient class to inherit from to access configurability.
 """
 #-----------------------------------------------------------------------------
 # Copyright (c) 2013, the IPython Development Team.
 #
 # Distributed under the terms of the Modified BSD License.
 #
 # The full license is in the file COPYING.txt, distributed with this software.
 #-----------------------------------------------------------------------------
 
 #-----------------------------------------------------------------------------
 # Imports
 #-----------------------------------------------------------------------------
 
 from ..utils.base import NbConvertBase
 from IPython.utils.traitlets import Bool
 
 #-----------------------------------------------------------------------------
 # Classes and Functions
 #-----------------------------------------------------------------------------
 
 class Transformer(NbConvertBase):
     """ A configurable transformer
 
     Inherit from this class if you wish to have configurability for your
     transformer.
 
     Any configurable traitlets this class exposed will be configurable in profiles
     using c.SubClassName.atribute=value
 
-    you can overwrite transform_cell to apply a transformation independently on each cell
-    or __call__ if you prefer your own logic. See corresponding docstring for informations.
+    you can overwrite `transform_cell` to apply a transformation independently on each cell
+    or `call` if you prefer your own logic. See corresponding docstring for informations.
 
     Disabled by default and can be enabled via the config by
         'c.YourTransformerName.enabled = True'
     """
     
     enabled = Bool(False, config=True)
 
     def __init__(self, **kw):
         """
         Public constructor
         
         Parameters
         ----------
         config : Config
             Configuration file structure
         **kw : misc
             Additional arguments
         """
         
         super(Transformer, self).__init__(**kw)
 
        
     def __call__(self, nb, resources):
         if self.enabled:
             return self.call(nb,resources)
         else:
             return nb, resources
 
 
     def call(self, nb, resources):
         """
         Transformation to apply on each notebook.
         
         You should return modified nb, resources.
         If you wish to apply your transform on each cell, you might want to 
         overwrite transform_cell method instead.
         
         Parameters
         ----------
         nb : NotebookNode
             Notebook being converted
         resources : dictionary
             Additional resources used in the conversion process.  Allows
             transformers to pass variables into the Jinja engine.
         """
         self.log.debug("Applying transform: %s", self.__class__.__name__)
         try :
             for worksheet in nb.worksheets:
                 for index, cell in enumerate(worksheet.cells):
                     worksheet.cells[index], resources = self.transform_cell(cell, resources, index)
             return nb, resources
         except NotImplementedError:
             raise NotImplementedError('should be implemented by subclass')
 
 
     def transform_cell(self, cell, resources, index):
         """
         Overwrite if you want to apply a transformation on each cell.  You 
         should return modified cell and resource dictionary.
         
         Parameters
         ----------
         cell : NotebookNode cell
             Notebook cell being processed
         resources : dictionary
             Additional resources used in the conversion process.  Allows
             transformers to pass variables into the Jinja engine.
         index : int
             Index of the cell being processed
         """
 
         raise NotImplementedError('should be implemented by subclass')
         return cell, resources