:mod:`struct`
=============

.. py:module:: struct

.. autoapi-nested-parse::

   Manipulation of c-style data

   This module implements a subset of the corresponding CPython module,
   as described below. For more information, refer to the original CPython
   documentation: struct.

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

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



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    </p>




.. py:function:: calcsize(fmt: str) -> int

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


.. py:function:: pack(fmt: str, *values: Any) -> bytes

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


.. py:function:: pack_into(fmt: str, buffer: _typing.WriteableBuffer, offset: int, *values: Any) -> None

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


.. py:function:: unpack(fmt: str, data: _typing.ReadableBuffer) -> Tuple[Any, Ellipsis]

   Unpack from the data according to the format string fmt. The return value
   is a tuple of the unpacked values. The buffer size must match the size
   required by the format.


.. py:function:: unpack_from(fmt: str, data: _typing.ReadableBuffer, offset: int = 0) -> Tuple[Any, Ellipsis]

   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. The buffer size must be at least as big
   as the size required by the form.