text: import os
  import re
  
  fileRe = r"^messages_?([A-Za-z_-]*)\.properties$"
  keyRe = r"^([A-Za-z]+)=.*\\n$"
  
  
  def isComment(string):
      return string[0] == "#"
  
  
  def normalizeLine(string):
      if string.endswith("\n") == False:
          string = string + "\n"
  
      return string
  
  
  def sortFile(filename):
      contents = None
  
      with open(filename) as file:
          contents = file.readlines()
  
      comments = [normalizeLine(x) for x in contents if isComment(x)]
      messages = [normalizeLine(x) for x in contents if not isComment(x)]
  
      messages.sort()
  
      with open(filename, "w") as file:
          for line in comments + messages:
              print(line, end="", file=file)
  
      print("Sorted", filename)
  
  for filename in os.listdir("."):
      if re.match(fileRe, filename) == None:
          continue
  
      sortFile(filename)
  