try:
from urllib.parse import urljoin
except ImportError:
from urlparse import urljoin
try:
import cPickle as pickle
except ImportError:
import pickle
from pip._vendor.urllib3.response import HTTPResponse
from pip._vendor.urllib3.util import is_fp_closed
# Replicate some six behaviour
try:
text_type = (unicode,)
except NameError:
text_type = (str,)