def byteswap(fmt, data, offset=0):
    """Swap bytes in `data` according to `fmt`, starting at byte `offset`
    and return the result. `fmt` must be an iterable, iterating over
    number of bytes to swap. For example, the format string ``'24'``
    applied to the bytes ``b'\\x00\\x11\\x22\\x33\\x44\\x55'`` will
    produce the result ``b'\\x11\\x00\\x55\\x44\\x33\\x22'``.

    """

    data = BytesIO(data)
    data.seek(offset)
    data_swapped = BytesIO()

    for f in fmt:
        swapped = data.read(int(f))[::-1]
        data_swapped.write(swapped)

    return data_swapped.getvalue()
def byteswap(fmt, data, offset=0):
    """Swap bytes in `data` according to `fmt`, starting at byte `offset`
    and return the result. `fmt` must be an iterable, iterating over
    number of bytes to swap. For example, the format string ``'24'``
    applied to the bytes ``b'\\x00\\x11\\x22\\x33\\x44\\x55'`` will
    produce the result ``b'\\x11\\x00\\x55\\x44\\x33\\x22'``.

    """

    data = BytesIO(data)
    data.seek(offset)
    data_swapped = BytesIO()

    for f in fmt:
        swapped = data.read(int(f))[::-1]
        data_swapped.write(swapped)

    return data_swapped.getvalue()
def byteswap ( fmt , data , offset = 0 ) : data = BytesIO ( data ) data . seek ( offset ) data_swapped = BytesIO ( ) for f in fmt : swapped = data . read ( int ( f ) ) [ : : - 1 ] data_swapped . write ( swapped ) return data_swapped . getvalue ( )
Swap bytes in `data` according to `fmt`, starting at byte `offset`
    and return the result. `fmt` must be an iterable, iterating over
    number of bytes to swap. For example, the format string ``'24'``
    applied to the bytes ``b'\\x00\\x11\\x22\\x33\\x44\\x55'`` will
    produce the result ``b'\\x11\\x00\\x55\\x44\\x33\\x22'``.
Swap bytes in data according to fmt starting at byte offset and return the result . fmt must be an iterable iterating over number of bytes to swap . For example the format string 24 applied to the bytes b \\ x00 \\ x11 \\ x22 \\ x33 \\ x44 \\ x55 will produce the result b \\ x11 \\ x00 \\ x55 \\ x44 \\ x33 \\ x22 .