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:mod:`ustruct` -- pack and unpack primitive data types

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

|see_cpython_module| :mod:`python:struct`.

Supported size/byte order prefixes: @, <, >, !.

Supported format codes: b, B, h, H, i, I, l, L, q, Q, s, P, f, d (the latter 2 depending on the floating-point support).

Functions

.. 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:: pack_into(fmt, buffer, offset, v1, v2, ...)

   Pack the values *v1*, *v2*, ... according to the format string *fmt*
   into a *buffer* starting at *offset*. *offset* may be negative to count
   from the end of *buffer*.


.. function:: unpack(fmt, data)

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


.. function:: unpack_from(fmt, data, offset=0)

   Unpack from the *data* starting at *offset* according to the format string
   *fmt*. *offset* may be negative to count from the end of *buffer*. The return
   value is a tuple of the unpacked values.