parameters: (self, label=None)
docstring: Return number of records per label
          :param label: string label
          :return: number of intervals which have the given label
docstring_summary: Return number of records per label
          :param label: string label
          :return: number of intervals which have the given label
docstring_tokens: Return number of records per label : param label : string label : return : number of intervals which have the given label
function: def count(self, label=None):
          """ Return number of records per label
          :param label: string label
          :return: number of intervals which have the given label
          """
          if not label:
              return self.intCount
          else:
              return self.count_by_label[label]
function_tokens: def count ( self , label = None ) : if not label : return self . intCount else : return self . count_by_label [ label ]