struct : binary data packing & unpacking options

1. Byte Order, Size, and Alignment

 

Character	Byte order	Size	Alignment
@	native	native	native
=	native	standard	none
<	little-endian	standard	none
>	big-endian	standard	none
!	network(=big-endian)	standard	none

 

 

2. Format Characters

 

Format	C type	Python type	Standard size
x	pad type	no value
c	char	bytes of length 1	1
b	signed char	integer	1
B	unsigned char	integer	1
?	_Bool	bool	1
h	short	integer	2
H	unsigned short	integer	2
i	int	integer	4
I	unsigned unt	integer	4
l	long	integer	4
L	unsigned long	integer	4
q	long long	integer	8
Q	unsigned long long	integer	8
n	ssize_t	integer
N	size_t	integer
e		float	2
f	float	float	4
d	double	float	8
s	char[]	bytes
p	char[]	bytes
P	void*	integer

 

Reference

https://docs.python.org/3.7/library/struct.html