.. module:: struct
   :synopsis: pack and unpack primitive data types

See Python struct for more information.

.. function:: calcsize(fmt)

   Return the number of bytes needed to store the given ``fmt``.

.. function:: pack(fmt, v1, v2, ...)

   Pack the values ``v1``, ``v2``, ... according to the format string ``fmt``.
   The return value is a bytes object encoding the values.

.. function:: unpack(fmt, data)

   Unpack from the ``data`` according to the format string ``fmt``.
   The return value is a tuple of the unpacked values.