getsitetitle

#!/usr/bin/env python3
# return the title of a site from the html

import sys
import logging
import lxml.html

logging.basicConfig(level=logging.INFO, format='%(asctime)s - %(levelname)s - %(message)s')


if sys.stdin.isatty():
    logging.error('no input')
    sys.exit(1)

def getsitetitle(html) -> str:
    logging.debug('getting site title')
    try:
        parsed_html = lxml.html.fromstring(html)
        titletext = parsed_html.find(".//title").text
    except AssertionError:
        logging.debug('could not fetch site title from source')
        return None
    except AttributeError:
        logging.debug('could not fetch site title from source')
        return None
    if titletext is not None:
        if len(titletext) > 50:
            titletext = titletext[:50]
        logging.debug('site title - ' + str(titletext))
        return titletext
    logging.debug('could not find site title from source')
    return None

if __name__ == "__main__":
    input_html = sys.stdin.read()
    title = getsitetitle(input_html)
    if title:
        print(title)