def extend( self, colset ):
		'Add a set of columns to the database (fast)'
		for i, col in enumerate( colset ):
			self.data[ self.flist[i] ].extend( col )
		self.rowcount += len( colset[0] )
Add a set of columns to the database (fast)
recipes/Python/577697_Simple_numeric_database/recipe-577697.py