2進数文字列を16進数文字列に変換する。(format(int(hoge, 2), 'x')が使えないとき用)

bin2hex.py

#!/usr/bin/env python
#-*- coding: utf-8 -*-

import sys

argv = sys.argv
argc = len(argv)
 
if argc != 2:
    print 'Usage: python bin2hex.py [file_name]'
    quit()
 
try:
    infile = open(argv[1], 'r')
    data = infile.read().replace(' ', '').replace('\n', '').replace('\r', '')

except:
    print 'Error: %s is not found.' % argv[1]
    quit()

outfile = open(raw_input('out file name:'), 'w')

c = b = h = 0
results = ''

for i in data[::-1]:
    h += int(i)*2**b
    c += 1
    b += 1
    if c == 4:
        results += format(h, 'x')
        c = h = b = 0

outfile.write(results[::-1])

infile.close()
outfile.close()