docs: def get_key(s):
      '''
      Get data between [ and ] remove ' if exist
      @param s: string to process
      '''
      start = s.find("[")
      end = s.find("]")
      if start == -1 or end == -1:
          return None
      if s[start + 1] == "'":
          start += 1
      if s[end - 1] == "'":
          end -= 1
      return s[start + 1:end]