text.py 文件源码

def _validate_texts(self, texts):
    """ Valiate the input to `fit` and `transform` """
    if not isinstance(texts, Iterable) and \
    not isinstance(texts, Iterator) and \
    not is_string(texts):
      raise ValueError('texts must be an iterator, generator or a string.')
    if is_string(texts):
      texts = (texts,)
    # convert to unicode
    texts = (t.decode('utf-8') for t in texts)
    return texts

  # ==================== properties ==================== #