code: def _psed(text,
            before,
            after,
            limit,
            flags):
      '''
      Does the actual work for file.psed, so that single lines can be passed in
      '''
      atext = text
      if limit:
          limit = re.compile(limit)
          comps = text.split(limit)
          atext = ''.join(comps[1:])
  
      count = 1
      if 'g' in flags:
          count = 0
          flags = flags.replace('g', '')
  
      aflags = 0
      for flag in flags:
          aflags |= RE_FLAG_TABLE[flag]
  
      before = re.compile(before, flags=aflags)
      text = re.sub(before, after, atext, count=count)
  
      return texf _psed(text,
            before,
            after,
            limit,
            flags):
      '''
      Does the actual work for file.psed, so that single lines can be passed in
      '''
      atext = text
      if limit:
          limit = re.compile(limit)
          comps = text.split(limit)
          atext = ''.join(comps[1:])
  
      count = 1
      if 'g' in flags:
          count = 0
          flags = flags.replace('g', '')
  
      aflags = 0
      for flag in flags:
          aflags |= RE_FLAG_TABLE[flag]
  
      before = re.compile(before, flags=aflags)
      text = re.sub(before, after, atext, count=count)
  
      return text
docs: Does the actual work for file.psed, so that single lines can be passed in