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>>> import struct

>>> help(struct)

Help on module struct:

NAME

    struct

DESCRIPTION

    Functions to convert between Python values and C structs.

    Python bytes objects are used to hold the data representing the C struct

    and also as format strings (explained below) to describe the layout of data

    in the C struct.

    The optional first format char indicates byte order, size and alignment:

      @: native order, size & alignment (default)

      =: native order, std. size & alignment

      <: little-endian, std. size & alignment

      >: big-endian, std. size & alignment

      !: same as >

    The remaining chars indicate types of args and must match exactly;

    these can be preceded by a decimal repeat count:

      x: pad byte (no data); c:char; b:signed byte; B:unsigned byte;

      ?: _Bool (requires C99; if not available, char is used instead)

      h:short; H:unsigned short; i:int; I:unsigned int;