old_contents: # -*- coding: utf-8-*-
  import re
  
  
  def detectYears(input):
      YEAR_REGEX = re.compile(r'(\b)(\d\d)([1-9]\d)(\b)')
      return YEAR_REGEX.sub('\g<1>\g<2> \g<3>\g<4>', input)
  
  
  def clean(input):
      """
          Manually adjust output text before it's translated into
          actual speech by the TTS system. This is to fix minior
          idiomatic issues, for example, that 1901 is pronounced
          "one thousand, ninehundred and one" rather than
          "nineteen oh one".
  
          Arguments:
          input -- original speech text to-be modified
      """
      return detectYears(input)
  
new_contents: # -*- coding: utf-8-*-
  import re
  
  
  def detect_years(input):
      YEAR_REGEX = re.compile(r'(\b)(\d\d)([1-9]\d)(\b)')
      return YEAR_REGEX.sub('\g<1>\g<2> \g<3>\g<4>', input)
  
  
  def clean(input):
      """
          Manually adjust output text before it's translated into
          actual speech by the TTS system. This is to fix minior
          idiomatic issues, for example, that 1901 is pronounced
          "one thousand, ninehundred and one" rather than
          "nineteen oh one".
  
          Arguments:
          input -- original speech text to-be modified
      """
      return detectYears(input)
  
subject: remove camel case from detect_years