struct.pack

pack将多种类型集合转化为string类型。

from struct import pack

k = pack("Ic2B", 0x123, 'k' ,59, 99)

print k

结果：

#k;c

Ic相当于

struct{

unsigned int  a

unsigned char b

}

from struct import pack

k = pack("%dB"%(2), 93, 94)

print k

结果：

]^