python 处理string到hex脚本的方法

#!/usr/bin/env python
# -*- coding:utf-8 -*- 
from sys import argv 
script,first = argv 
 
buf = []
tmp = []
 
#读取待处理文件全部内容 并存到buf中
with open(first, 'r') as f:
 buf = f.read()
f.closed
 
#对buf中内容，进行每隔2个字符取出，并以", 0X"连接，最后在头部加上'0X'
for i in range(0,len(buf),2): 
 tmp.append(buf[i:i+2])
hex_temp = ", 0X".join(tmp)
hex_buf = '%s%s' %('0X', hex_temp)
 
#把处理后的hex数据写入到hex.txt文件中
with open("hex.txt", 'w') as out:
 out.write(hex_buf)
out.close()