parameters: (self, extensions=None, filter_func=None)
return_statement: return x
docstring: Returns a list of templates for this environment.  This requires
          that the loader supports the loader's
          :meth:`~BaseLoader.list_templates` method.
  
          If there are other files in the template folder besides the
          actual templates, the returned list can be filtered.  There are two
          ways: either `extensions` is set to a list of file extensions for
          templates, or a `filter_func` can be provided which is a callable that
          is passed a template name and should return `True` if it should end up
          in the result list.
  
          If the loader does not support that, a :exc:`TypeError` is raised.
  
          .. versionadded:: 2.4
docstring_summary: Returns a list of templates for this environment.  This requires
          that the loader supports the loader's
          :meth:`~BaseLoader.list_templates` method.
docstring_tokens: Returns a list of templates for this environment . This requires that the loader supports the loader s : meth : ~BaseLoader . list_templates method .
function: def list_templates(self, extensions=None, filter_func=None):
          """Returns a list of templates for this environment.  This requires
          that the loader supports the loader's
          :meth:`~BaseLoader.list_templates` method.
  
          If there are other files in the template folder besides the
          actual templates, the returned list can be filtered.  There are two
          ways: either `extensions` is set to a list of file extensions for
          templates, or a `filter_func` can be provided which is a callable that
          is passed a template name and should return `True` if it should end up
          in the result list.
  
          If the loader does not support that, a :exc:`TypeError` is raised.
  
          .. versionadded:: 2.4
          """
          x = self.loader.list_templates()
          if extensions is not None:
              if filter_func is not None:
                  raise TypeError('either extensions or filter_func '
                                  'can be passed, but not both')
              filter_func = lambda x: '.' in x and \
                                      x.rsplit('.', 1)[1] in extensions
          if filter_func is not None:
              x = list(ifilter(filter_func, x))
          return x
function_tokens: def list_templates ( self , extensions = None , filter_func = None ) : x = self . loader . list_templates ( ) if extensions is not None : if filter_func is not None : raise TypeError ( 'either extensions or filter_func ' 'can be passed, but not both' ) filter_func = lambda x : '.' in x and x . rsplit ( '.' , 1 ) [ 1 ] in extensions if filter_func is not None : x = list ( ifilter ( filter_func , x ) ) return x