code: def get_simple_date(datestring):
      
      simple_date = re.compile(r"\d{1,2}(\.)\d{1,2}")
      date = simple_date.search(datestring)
      if date:
          dates = date.group().split(".")
          if len(dates[0]) == 1:
              dates[0] = add_zero(dates[0])
          if len(dates[1]) == 1:
              dates[1] = add_zero(dates[1])
  
          if date_is_valid(dates):
              return '.'.join(dates) + '.'
          return "Failed"
docs: Transforms a datestring into shorter date 7.9.2017 > 07.09
  
      Expects the datestring to be format 07.09.2017. If this is not the
      case, returns string "Failed".
  
      Keyword arguments:
      datestring -- a string
  
      Returns:
      String -- The date in format "dd.MM." or "Failed"