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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;

>>> import struct

>>> struct.__doc__

"Functions to convert between Python values and C structs.\nPython bytes objects are used to hold the data representing the C struct\nand also as format string

s (explained below) to describe the layout of data\nin the C struct.\n\nThe optional first format char indicates byte order, size and alignment:\n  @: native o

rder, size & alignment (default)\n  =: native order, std. size & alignment\n  <: little-endian, std. size & alignment\n  >: big-endian, std. size & alignment\n

  !: same as >\n\nThe remaining chars indicate types of args and must match exactly;\nthese can be preceded by a decimal repeat count:\n  x: pad byte (no data)

; c:char; b:signed byte; B:unsigned byte;\n  ?: _Bool (requires C99; if not available, char is used instead)\n  h:short; H:unsigned short; i:int; I:unsigned in

t;\n  l:long; L:unsigned long;