docs: def myGrades(year, candidateNumber, badFormat, length):
      '''returns final result of candidateNumber in year
  
      Arguments:
          year {int} -- the year candidateNumber is in
          candidateNumber {str} -- the candidateNumber of candidateNumber
          badFormat {dict} -- candNumber : [results for candidate]
          length {int} -- length of each row in badFormat divided by 2
  
  
      Returns:
          int -- a weighted average for a specific candidate number and year
      '''
  
      weights1 = [1, 1, 1, 1, 0.5, 0.5, 0.5, 0.5]
      weights2 = [1, 1, 1, 1, 1, 1, 0.5, 0.5]
      if year == 1:
          myFinalResult = sum([int(badFormat[candidateNumber][2*(i + 1)])
                               * weights1[i] for i in range(length-1)]) / 6
      elif year == 2 or year == 3:
          myFinalResult = sum([int(badFormat[candidateNumber][2*(i + 1)])
                               * weights2[i] for i in range(length-1)]) / 7
      elif year == 4:
          myFinalResult = sum([int(badFormat[candidateNumber][2*(i + 1)])
                               for i in range(length-1)]) / 8
  
      return myFinalResult