Summarize Python3

summarize3.py

#!/usr/bin/env python3
import os
import urllib
import urllib.request
import sys
import re
import json 

TITLE = "title"

if __name__ == '__main__':
    if len(sys.argv) < 1:
        print("This script summarizes urls. Please provide one")
        exit(1)
    AYLIEN_ID = 'AYLIENID'
    AYLIEN_KEY = 'AYLIENKEY'
    aylein_url = 'https://api.aylien.com/api/v1/summarize?url={}'
    page = urllib.request.urlopen(sys.argv[1].strip()).read().decode('utf-8')
    try:
        title = re.search(
            r'(<{title}.*>)(.*)(</{title}>)'.format(title=TITLE), 
            page,
            re.IGNORECASE
            ).group(2)
    except AttributeError:
        title = "Failed to find title"
    headers = {
        'Accept': 'application/json',
        'Content-type': 'application/x-www-form-urlencoded',
        'X-AYLIEN-TextAPI-Application-ID': os.environ.get(AYLIEN_ID),
        'X-AYLIEN-TextAPI-Application-Key': os.environ.get(AYLIEN_KEY)
    }
    request = urllib.request.Request(
        aylein_url.format(urllib.parse.quote(sys.argv[1]))
    )
    for key, value in headers.items():
        request.add_header(key, value)
    summary = json.loads(urllib.request.urlopen(request).read().decode('utf-8'))
    print("{}{}{}".format('\033[1m', title, '\033[0m'))
    print("\n")
    for sentence in summary['sentences']:
        print("- {}\n".format(sentence))