urllib_usage

if sys.version_info[0] > 2:
    from urllib.parse import urlparse, urljoin
    from urllib.error import HTTPError
    import urllib.request as urllib2
    from html.parser import HTMLParser
    raw_input = input
else:
    from urlparse import urlparse, urljoin
    import urllib2
    from urllib2 import HTTPError
    from HTMLParser import HTMLParser