-from six import assertRaisesRegex
-from six import binary_type
-from six import byte2int
-from six import indexbytes
-from six import int2byte
-from six import iterbytes
-from six import PY2
-from six import text_type
-from six import unichr as six_unichr
-from six.moves import xrange as six_xrange
-from six.moves.cPickle import dumps as pickle_dumps
-from six.moves.cPickle import HIGHEST_PROTOCOL as pickle_proto
-from six.moves.cPickle import loads as pickle_loads
+from pickle import dumps as pickle_dumps
+from pickle import HIGHEST_PROTOCOL as pickle_proto
+from pickle import loads as pickle_loads