data uri schemeをワンコマンドで生成するなにか Usage: dataurlcheme filename

dataurichemer.py

import sys
import os.path
import mimetypes
import binascii

def encode(filename, data):
    mime = mimetypes.guess_type(filename)[0]
    encoded = binascii.b2a_base64(data)
    return "data:{mime};base64,{enc}".format(mime=mime,enc=encoded)

def usage():
    print """Usage: {cmd} file\n""".format(cmd=os.path.basename(__file__))

if __name__ == '__main__':
    args = sys.argv
    if len(args) != 2:
        usage()
        raise TypeError("argument error")

    filename = args[1]
    data = open(filename).read()

    sys.stdout.write(encode(filename, data))