python 文件转成16进制数组

#! /usr/bin/python2
# coding=utf-8

import numpy
import binascii

if __name__=="__main__":
    #my_matrix = numpy.loadtxt(open("d:\local.pcm", "rb"), delimiter=",", skiprows=0)
    #print my_matrix
    with open("d:\local.pcm", "rb") as f:
        all = f.read()

        with open("d:\aa.txt", "w") as f:
            f.write("char buf[]={")
            for d in all:
                #e = "%02s," % hex(ord(d))
                #print binascii.b2a_hex(d)
                e = "0x%s," % binascii.b2a_hex(d)
                #print e
                f.write(e)
            #L = f.tell()
            #f.seek(L-1,0)
            f.seek(-1, 2)
            f.write("};")
            """
        for i in all:
            #print type(i),i,int("0x10", i)
            x = "0x%s" % i
            print type(x),x
            b =  binascii.b2a_hex(i)
            c = "0x%s" % b
            print b,type(b),c, type(c)
        """