A python script to process markdown and stylize code blocks. Works well with Marked 2

markdownio.py

#!/usr/bin/env python

# This script is writted as a custom markdown processor with Marked 2
# It takes markdown on standard input and writes rendered html5 to
# standard output. Unlike the built-in processors, this marks code
# blocks with CSS classes, which can be stylized with a stylesheet.
# This obviates the for javascript running on the client stylizing the
# code at page load.

import sys
import markdown

def main():
    extensions = ['markdown.extensions.extra',
                  'markdown.extensions.codehilite',
                  'markdown.extensions.smarty']
    extension_config = {'markdown.extensions.codehilite':
                        {'linenums': False, 'guess_lang': False}}
    text = sys.stdin.read()
    output = markdown.markdown(text, extensions=extensions,
                              extension_configs=extension_config,
                              outputformat='html5')
    sys.stdout.write(output)
    return 0

if __name__ == '__main__':
    sys.exit(main())