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j j | d � } q1d j | | � d d j | | | � } n d j | � } | S( s� Convert an IPv6 address in binary form to text form.
*address*, a ``binary``, the IPv6 address in binary form.
Raises ``ValueError`` if the address isn't 16 bytes long.
Returns a ``text``.
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rmt j j � n Xd S( s� Convert an IPv6 address in text form to binary form.
*text*, a ``text``, the IPv6 address in textual form.
Returns a ``binary``.
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