Index: lnt/external/stats/stats.py
===================================================================
--- lnt/external/stats/stats.py
+++ lnt/external/stats/stats.py
@@ -911,7 +911,7 @@
     if len(categories) != 2:
         raise ValueError("Exactly 2 categories required for pointbiserialr().")
     else:   # there are 2 categories, continue
-        codemap = pstat.abut(categories, range(2))
+        codemap = pstat.abut(categories, list(range(2)))
         recoded = pstat.recode(data, codemap, 0)
         x = pstat.linexand(data, 0, categories[0])
         y = pstat.linexand(data, 0, categories[1])
@@ -1746,7 +1746,7 @@
 """
     n = len(inlist)
     svec = copy.deepcopy(inlist)
-    ivec = range(n)
+    ivec = list(range(n))
     gap = n // 2   # integer division needed
     while gap >0:
         for i in range(gap, n):
@@ -4259,7 +4259,7 @@
 """
     n = len(inarray)
     svec = inarray *1.0
-    ivec = range(n)
+    ivec = list(range(n))
     gap = n // 2   # integer division needed
     while gap >0:
         for i in range(gap, n):
Index: lnt/testing/profile/profilev2impl.py
===================================================================
--- lnt/testing/profile/profilev2impl.py
+++ lnt/testing/profile/profilev2impl.py
@@ -1,4 +1,5 @@
 from __future__ import absolute_import
+from builtins import range
 from .profile import ProfileImpl
 import StringIO
 import bz2
@@ -252,12 +253,12 @@
     def serialize(self, fobj):
         n_names = len(self.idx_to_name)
         writeNum(fobj, n_names)
-        for i in xrange(n_names):
+        for i in range(n_names):
             writeString(fobj, self.idx_to_name[i])
 
     def deserialize(self, fobj):
         self.idx_to_name = {}
-        for i in xrange(readNum(fobj)):
+        for i in range(readNum(fobj)):
             self.idx_to_name[i] = readString(fobj)
         self.name_to_idx = {v: k
                             for k, v
@@ -287,7 +288,7 @@
 
     def deserialize(self, fobj):
         self.counters = {}
-        for i in xrange(readNum(fobj)):
+        for i in range(readNum(fobj)):
             k = readNum(fobj)
             v = readNum(fobj)
             self.counters[self.counter_name_pool.idx_to_name[k]] = v
@@ -514,7 +515,7 @@
 
     def deserialize(self, fobj):
         self.functions = {}
-        for i in xrange(readNum(fobj)):
+        for i in range(readNum(fobj)):
             f = {}
             name = readString(fobj)
             f['length'] = readNum(fobj)
@@ -523,7 +524,7 @@
             self.line_text.setOffsetFor(name, readNum(fobj))
             f['counters'] = {}
 
-            for j in xrange(readNum(fobj)):
+            for j in range(readNum(fobj)):
                 k = self.counter_name_pool.idx_to_name[readNum(fobj)]
                 v = readFloat(fobj)
                 f['counters'][k] = v
@@ -540,7 +541,7 @@
             .extractForFunction(fname, list(f['counters'].keys()))
         address_gen = self.line_addresses.extractForFunction(fname)
         text_gen = self.line_text.extractForFunction(fname)
-        for n in xrange(f['length']):
+        for n in range(f['length']):
             yield (next(counter_gen), next(address_gen), next(text_gen))
 
     def copy(self, counter_name_pool, line_counters,
Index: lnt/tests/nt.py
===================================================================
--- lnt/tests/nt.py
+++ lnt/tests/nt.py
@@ -1211,7 +1211,7 @@
 
     results = []
     no_errors = True
-    for _ in xrange(0, num_times):
+    for _ in range(0, num_times):
         test_results, t_no_errors = _execute_test_again(
             config, test_name, test_full_path, relative_test_path, logfile)
         no_errors &= t_no_errors
Index: tests/utils/blast.py
===================================================================
--- tests/utils/blast.py
+++ tests/utils/blast.py
@@ -8,6 +8,7 @@
 ## Just to make sure there are no syntax errors in this.  This does not
 ## actually run a blast.
 # RUN: python %{src_root}/tests/utils/blast.py
+from builtins import range
 import time
 import subprocess
 import os
@@ -45,7 +46,7 @@
     """Make a random sized list of random samples."""
     r = random.randint(1, 20)
     samples = []
-    for i in xrange(r):
+    for i in range(r):
         samples.append(random.random() * 100)
     return samples
 
@@ -65,7 +66,7 @@
     print("Usage: python blast.py <num_submissions> <sleep_between> [optional url]")
     sys.exit(0)
 
-for i in xrange(int(sys.argv[1])):
+for i in range(int(sys.argv[1])):
     machine = lnt.testing.Machine(MACH, DEFAULT_MACHINE_INFO)
     run = lnt.testing.Run(start_time, end_time, run_info)
     report = lnt.testing.Report(machine=machine, run=run, tests=[])