lc-12-int-to-roman.py

class Solution:
  def intToRoman(self, num: int) -> str:
    numerals = {
      1: 'I',
      4: 'IV',
      5: 'V',
      9: 'IX',
      10: 'X',
      40: 'XL',
      50: 'L',
      90: 'XC',
      100: 'C',
      400: 'CD',
      500: 'D',
      900: 'CM',
      1000: 'M'
    }
  
    numeralKeys = list(numerals.keys())
    numeralsToReturn = ''

    while num > 0:
      if (numeralKeys[-1] > num):
        numeralKeys.pop()
      else:
        num -= numeralKeys[-1]
        numeralsToReturn += numerals[numeralKeys[-1]]

    return numeralsToReturn