python 读取文件、并以十六进制的方式写入到新文件

#!/usr/bin/env python
infile = file("in.mp3","rb")
outfile = file("out.txt","wb")
def main():
    while 1:
        c = infile.read(1)
        if not c:
            break
        outfile.write(hex(ord(c)))
    outfile.close()
    infile.close()
if __name__ == '__main__':
    main()

下面是我自己改过的

#coding:utf-8
# 程序目标，读取1.bmp，然后以16进制方式写到txt文件
 
def main():
    f = open("1.bmp","rb")
    outfile = open("out.txt","wb")
    i = 0
    while 1:
        c = f.read(1)
        i = i + 1
        if not c:
            break
        if i%32 == 0:
            outfile.write("\n")
        else:
            if ord(c) <= 15:
                outfile.write("0x0"+hex(ord(c))[2:]+" ")
            else:
                outfile.write(hex(ord(c))+" ")
    outfile.close()
    f.close()
 
if __name__=="__main__":
    main()

效果如下：

当然，我需要的是真正的十六进制值。然后代码变成了这样

#coding:utf-8
# 程序目标，读取1.bmp，然后以16进制方式写到txt文件
 
def main():
    f = open("1.bmp","rb")
    outfile = open("out.txt","wb")
    i = 0
    while 1:
        c = f.read(1)
        i = i + 1
        if not c:
            break
        if i%32 == 0:
            outfile.write("\n")
        else:
            if ord(c) <= 15:
                outfile.write(("0x0"+hex(ord(c))[2:])[2:]+" ")
            else:
                outfile.write((hex(ord(c)))[2:]+" ")
    outfile.close()
    f.close()
 
if __name__=="__main__":
    main()

文件的数据变成了