(self)
return None
returns number of cols
returns number of cols
returns number of cols
def number_of_cols(self):
        """ returns number of cols
        """
        if self.model() is not None:
            return self.model().columnCount()

        return None
def number_of_cols ( self ) : if self . model ( ) is not None : return self . model ( ) . columnCount ( ) return None