new_contents: class Solution(object):
      def titleToNumber(self, s):
          """
          :type s: str
          :rtype: int
          """
          LOOKUP = {
              'A': 1,             'B': 2,
              'C': 3,             'D': 4,
              'E': 5,             'F': 6,
              'G': 7,             'H': 8,
              'I': 9,             'J': 10,
              'K': 11,            'L': 12,
              'M': 13,            'N': 14,
              'O': 15,            'P': 16,
              'Q': 17,            'R': 18,
              'S': 19,            'T': 20,
              'U': 21,            'V': 22,
              'W': 23,            'X': 24,
              'Y': 25,            'Z': 26
          }
          
          value = 0
          
          for index, letter in enumerate(reversed(s)):
              value += LOOKUP[letter] * 26 ** index
              
          return value
  
subject: Create solution.py