code: def get_coding(text, force_chardet=False):
      
      if not force_chardet:
          for line in text.splitlines()[:2]:
              try:
                  result = CODING_RE.search(to_text_string(line))
              except UnicodeDecodeError:
                  # This could fail because to_text_string assume the text
                  # is utf8-like and we don't know the encoding to give
                  # it to to_text_string
                  pass
              else:
                  if result:
                      codec = result.group(1)
                      # sometimes we find a false encoding that can
                      # result in errors
                      if codec in CODECS:
                          return codec
  
      # Fallback using chardet
      if is_binary_string(text):
          detector = UniversalDetector()
          for line in text.splitlines()[:2]:
              detector.feed(line)
              if detector.done: break
  
          detector.close()
          return detector.result['encoding']
  
      return None
docs: Function to get the coding of a text.
      @param text text to inspect (string)
      @return coding string