def double_metaphone(word, max_length=-<NUM_LIT:1>):
return DoubleMetaphone().encode(word, max_length)<EOL>
Return the Double Metaphone code for a word.

    This is a wrapper for :py:meth:`DoubleMetaphone.encode`.

    Parameters
    ----------
    word : str
        The word to transform
    max_length : int
        The maximum length of the returned Double Metaphone codes (defaults to
        unlimited, but in Philips' original implementation this was 4)

    Returns
    -------
    tuple
        The Double Metaphone value(s)

    Examples
    --------
    >>> double_metaphone('Christopher')
    ('KRSTFR', '')
    >>> double_metaphone('Niall')
    ('NL', '')
    >>> double_metaphone('Smith')
    ('SM0', 'XMT')
    >>> double_metaphone('Schmidt')
    ('XMT', 'SMT')