def get_tokens_from_line(line):
    """
    Given a line split it into tokens and return them.

    Tokens are runs of characters separated by spaces. If there are no
    tokens return an empty list.

    Args:
        line (str): line to convert to tokens
    Returns:
        list(str): The tokens
    """
    if not line:
        return []
    line_tokens = line.split()
    if not line_tokens:
        return []
    return line_tokens
