struct module
This module performs conversions between Python values and C structs represented as Python strings.



In [2]:

    
from struct import *

1 Convert

Format	C Type	Python	byte-size
x	pad byte	no value	1
c	char	string 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 int	integer or long	4
l	long	integer	4
L	unsigned long	long	4
q	long long	long	8
Q	unsigned long long	long	8
f	float	float	4
d	double	float	8
s	char[]	string	1
p	char[]	string	1

2 byte order



In [3]:

    
pack('hhl', 1, 2, 3)









    Out[3]:





'\x01\x00\x02\x00\x00\x00\x00\x00\x03\x00\x00\x00\x00\x00\x00\x00'



In [4]:

    
unpack('hhl', '\x01\x00\x02\x00\x00\x00\x00\x00\x03\x00\x00\x00\x00\x00\x00\x00')









    Out[4]:





(1, 2, 3)