A.round(float,decimals)B.float.round(decimals)C.roundUp(float,decimals)D.float.toFixed(decimals)
A.str(num)B.num.toString()C.convert(num,str)D.intToStr(num)
A.dict(zip(list1,list2))B.list1.toDict(list2)C.list1&&list2D.list1.merge(list2)