def _replace_token_range ( tokens , start , end , replacement ) : tokens = tokens [ : start ] + replacement + tokens [ end : ] return tokens
python replace string range
For a range indicated from start to end replace with replacement .
def _replace_token_range(tokens, start, end, replacement):
    """For a range indicated from start to end, replace with replacement."""
    tokens = tokens[:start] + replacement + tokens[end:]
    return tokens