文件中文编码之间的转换

#!/usr/bin/python
#This script is for change the file
#encode from gb2312 to UTF-8
import codecs
import sys
if len(sys.argv[:])!=3:
    print "Usage:code.py gb2312_file utf-8_filename"
    sys.exit(1)
f_in=codecs.open(sys.argv[1],'r','gb2312')
f_out=codecs.open(sys.argv[2],'a','UTF-8')
for line in f_in:
    f_out.write(line)
f_in.close()
f_out.close()