# KataRomanNumeralsYetAnotherOne

``````import doctest,pdb

def roman\_help(value, low, medium, high):

"""
>>> roman_help(1, "I", "V", "X")
'I'
>>> roman_help(2, "I", "V", "X")
'II'
>>> roman_help(3, "I", "V", "X")
'III'
>>> roman_help(4, "I", "V", "X")
'IV'
>>> roman_help(5, "I", "V", "X")
'V'
>>> roman_help(6, "I", "V", "X")
'VI'
>>> roman_help(7, "I", "V", "X")
'VII'
>>> roman_help(8, "I", "V", "X")
'VIII'
>>> roman_help(9, "I", "V", "X")
'IX'
>>> roman_help(10, "I", "V", "X")
'X'
>>> roman_help(11, "I", "V", "X")
'XI'
>>> roman_help(12, "I", "V", "X")
'XII'
>>> roman_help(13, "I", "V", "X")
'XIII'
>>> roman_help(14, "I", "V", "X")
'XIV'
>>> roman_help(15, "I", "V", "X")
'XV'
>>> roman_help(16, "I", "V", "X")
'XVI'
>>> roman_help(17, "I", "V", "X")
'XVII'
>>> roman_help(18, "I", "V", "X")
'XVIII'
>>> roman_help(19, "I", "V", "X")
'XIX'
>>> roman_help(20, "I", "V", "X")
'XX'

"""

cases={1:low, 2:low*2, 3:low*3, 4:low+medium, 5: medium,
6:medium+low, 7:medium+low*2, 8: medium+low*3, 9: low+high,0:''
}
return high*(value/10 )+cases[value%10]

def roman(value):

"""
>>> roman(1)
'I'
>>> roman(2)
'II'
>>> roman(3)
'III'
>>> roman(4)
'IV'
>>> roman(5)
'V'
>>> roman(6)
'VI'
>>> roman(7)
'VII'
>>> roman(8)
'VIII'
>>> roman(9)
'IX'
>>> roman(10)
'X'
>>> roman(19)
'XIX'
>>> roman(49)
'XLIX'
>>> roman(99)
'XCIX'
>>> roman(309)
'CCCIX'
>>> roman(527)
'DXXVII'
>>> roman(789)
'DCCLXXXIX'
>>> roman(1888)
'MDCCCLXXXVIII'
>>> roman(1999)
'MCMXCIX'
>>> roman(2001)
'MMI'

"""
out=""

if value/100:
out+=roman_help(value/100, "C", "D", "M")
value=value%100
if value/10:
out+=roman_help(value/10, "X", "L", "C")
value=value%10
if value:
out+=roman_help(value, "I", "V", "X")
return out

if \_\_name\_\_=='\_\_main\_\_':

print doctest.testmod()
``````