源代码: roman_mumeral_map = (('M',1000), ('CM',900), ('D',500), ('CD',400), ('C',100), ('XC',90), ('L',50), ('XL',40), ('X',10), ('IX',9), ('V',5), ('IV',4), ('I',1)) def to_roman(n): ''' convert integer to Roman numeral ''' if not (0 < n < 4000): rais…