# convenience wrapper for urllib2 & friends import json import urllib import urllib2 import urlparse from urllib import quote, quote_plus from urllib2 import HTTPError, URLError import lxml user_agent = 'Skybot/1.0 http://bitbucket.org/Scaevolus/skybot' ua_firefox = 'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.6) ' \ 'Gecko/20070725 Firefox/2.0.0.6' ua_internetexplorer = 'Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1)' def get(*args, **kwargs): return open(*args, **kwargs).read() def get_html(*args, **kwargs): return lxml.html.fromstring(get(*args, **kwargs)) def get_xml(*args, **kwargs): return lxml.etree.fromstring(get(*args, **kwargs)) def get_json(*args, **kwargs): return json.loads(get(*args, **kwargs)) def open(url, query_params={}, user_agent=user_agent, post_data=None, get_method=None, **kwargs): query_params.update(kwargs) url = prepare_url(url, query_params) request = urllib2.Request(url, post_data) if get_method is not None: request.get_method = lambda: get_method request.add_header('User-Agent', user_agent) return urllib2.build_opener().open(request) def prepare_url(url, queries): if queries: scheme, netloc, path, query, fragment = urlparse.urlsplit(url) query = dict(urlparse.parse_qsl(query)) query.update(queries) query = urllib.urlencode(dict((to_utf8(key), to_utf8(value)) for key, value in query.iteritems())) url = urlparse.urlunsplit((scheme, netloc, path, query, fragment)) return url def to_utf8(s): if isinstance(s, str): return s else: return s.encode('utf8', 'ignore')