independence and python 3 compat for setutils

boltons/setutils.py

@@ -16,7 +16,6 @@ from bisect import bisect_left
 from itertools import chain, islice
 from collections import MutableSet
 import operator
-from .compat import lrange
 
 try:
     from compat import make_sentinel
@@ -47,7 +46,7 @@ class IndexedSet(MutableSet):
     Args:
         other (iterable): An optional iterable used to initialize the set.
 
-    >>> x = IndexedSet(lrange(4) + lrange(8))
+    >>> x = IndexedSet(list(range(4)) + list(range(8)))
     >>> x
     IndexedSet([0, 1, 2, 3, 4, 5, 6, 7])
     >>> x - set(range(2))