Python Penetration Testing Essentials - Second Edition

Format characters

We have seen the format in the pack and unpack methods. In the following table, we have C-type and Python-type columns. It denotes the conversion between C and Python types. The Standard size column refers to the size of the packed value in bytes:

Format	C type	Python type	Standard size
x	pad byte	no value
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	4
l	long	integer	4
L	unsigned long	integer	4
q	long long	integer	8
Q	unsigned long long	integer	8
f	float	float	4
d	double	float	8
s	char[]	string
p	char[]	string
P	void *	integer

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