diff --git a/examples/test/test_bind.py b/examples/test/test_bind.py
index dcc9fbf93..e423e39b0 100755
--- a/examples/test/test_bind.py
+++ b/examples/test/test_bind.py
@@ -5,7 +5,7 @@
 """
 
 import unittest
-import pexpect
+from mininet.util import pexpect
 
 class testBind( unittest.TestCase ):
 
diff --git a/examples/test/test_clusterSanity.py b/examples/test/test_clusterSanity.py
index cdbc3906f..13e51e26b 100755
--- a/examples/test/test_clusterSanity.py
+++ b/examples/test/test_clusterSanity.py
@@ -5,7 +5,7 @@
 '''
 
 import unittest
-import pexpect
+from mininet.util import pexpect
 
 class clusterSanityCheck( unittest.TestCase ):
 
diff --git a/examples/test/test_controllers.py b/examples/test/test_controllers.py
index b9b93d9eb..abc79eb34 100755
--- a/examples/test/test_controllers.py
+++ b/examples/test/test_controllers.py
@@ -5,7 +5,7 @@
 """
 
 import unittest
-import pexpect
+from mininet.util import pexpect
 
 class testControllers( unittest.TestCase ):
 
diff --git a/examples/test/test_controlnet.py b/examples/test/test_controlnet.py
index 3a99ea4c6..ba22740b5 100755
--- a/examples/test/test_controlnet.py
+++ b/examples/test/test_controlnet.py
@@ -5,7 +5,7 @@
 """
 
 import unittest
-import pexpect
+from mininet.util import pexpect
 
 class testControlNet( unittest.TestCase ):
 
diff --git a/examples/test/test_cpu.py b/examples/test/test_cpu.py
index c7a626635..8b36c6eed 100755
--- a/examples/test/test_cpu.py
+++ b/examples/test/test_cpu.py
@@ -15,7 +15,7 @@
 """
 
 import unittest
-import pexpect
+from mininet.util import pexpect
 import sys
 
 class testCPU( unittest.TestCase ):
diff --git a/examples/test/test_emptynet.py b/examples/test/test_emptynet.py
index f8e7c4a3c..aead61984 100755
--- a/examples/test/test_emptynet.py
+++ b/examples/test/test_emptynet.py
@@ -5,7 +5,7 @@
 """
 
 import unittest
-import pexpect
+from mininet.util import pexpect
 
 class testEmptyNet( unittest.TestCase ):
 
diff --git a/examples/test/test_hwintf.py b/examples/test/test_hwintf.py
index 843fc409d..e242ca386 100755
--- a/examples/test/test_hwintf.py
+++ b/examples/test/test_hwintf.py
@@ -7,7 +7,7 @@
 import unittest
 import re
 
-import pexpect
+from mininet.util import pexpect
 
 from mininet.log import setLogLevel
 from mininet.node import Node
diff --git a/examples/test/test_intfoptions.py b/examples/test/test_intfoptions.py
index 6f1ebecfa..2d724711e 100755
--- a/examples/test/test_intfoptions.py
+++ b/examples/test/test_intfoptions.py
@@ -5,7 +5,7 @@
 """
 
 import unittest
-import pexpect
+from mininet.util import pexpect
 import sys
 
 class testIntfOptions( unittest.TestCase ):
diff --git a/examples/test/test_limit.py b/examples/test/test_limit.py
index 2052e7e0e..47ceaa1ec 100755
--- a/examples/test/test_limit.py
+++ b/examples/test/test_limit.py
@@ -5,7 +5,7 @@
 """
 
 import unittest
-import pexpect
+from mininet.util import pexpect
 import sys
 
 class testLimit( unittest.TestCase ):
diff --git a/examples/test/test_linearbandwidth.py b/examples/test/test_linearbandwidth.py
index a18d97abf..9e876bc31 100755
--- a/examples/test/test_linearbandwidth.py
+++ b/examples/test/test_linearbandwidth.py
@@ -5,7 +5,7 @@
 """
 
 import unittest
-import pexpect
+from mininet.util import pexpect
 import sys
 
 class testLinearBandwidth( unittest.TestCase ):
diff --git a/examples/test/test_linuxrouter.py b/examples/test/test_linuxrouter.py
index 60af20144..f9cf64854 100644
--- a/examples/test/test_linuxrouter.py
+++ b/examples/test/test_linuxrouter.py
@@ -5,7 +5,7 @@
 """
 
 import unittest
-import pexpect
+from mininet.util import pexpect
 from mininet.util import quietRun
 
 class testLinuxRouter( unittest.TestCase ):
diff --git a/examples/test/test_multilink.py b/examples/test/test_multilink.py
index 4bea8b0a1..092554835 100755
--- a/examples/test/test_multilink.py
+++ b/examples/test/test_multilink.py
@@ -6,7 +6,7 @@
 '''
 
 import unittest
-import pexpect
+from mininet.util import pexpect
 
 class testMultiLink( unittest.TestCase ):
 
diff --git a/examples/test/test_multiping.py b/examples/test/test_multiping.py
index bb5440a1a..251912195 100755
--- a/examples/test/test_multiping.py
+++ b/examples/test/test_multiping.py
@@ -5,7 +5,7 @@
 """
 
 import unittest
-import pexpect
+from mininet.util import pexpect
 from collections import defaultdict
 
 class testMultiPing( unittest.TestCase ):
diff --git a/examples/test/test_multipoll.py b/examples/test/test_multipoll.py
index 61e5cec4a..881503365 100755
--- a/examples/test/test_multipoll.py
+++ b/examples/test/test_multipoll.py
@@ -5,7 +5,7 @@
 """
 
 import unittest
-import pexpect
+from mininet.util import pexpect
 
 class testMultiPoll( unittest.TestCase ):
 
diff --git a/examples/test/test_multitest.py b/examples/test/test_multitest.py
index 09172c5fa..4352b8e4d 100755
--- a/examples/test/test_multitest.py
+++ b/examples/test/test_multitest.py
@@ -5,7 +5,7 @@
 """
 
 import unittest
-import pexpect
+from mininet.util import pexpect
 
 class testMultiTest( unittest.TestCase ):
 
diff --git a/examples/test/test_nat.py b/examples/test/test_nat.py
index c4bb096fb..865615f4a 100755
--- a/examples/test/test_nat.py
+++ b/examples/test/test_nat.py
@@ -5,7 +5,7 @@
 """
 
 import unittest
-import pexpect
+from mininet.util import pexpect
 from mininet.util import quietRun
 
 destIP = '8.8.8.8' # Google DNS
diff --git a/examples/test/test_natnet.py b/examples/test/test_natnet.py
index 3addc92e2..4b9e099fb 100644
--- a/examples/test/test_natnet.py
+++ b/examples/test/test_natnet.py
@@ -5,7 +5,7 @@
 """
 
 import unittest
-import pexpect
+from mininet.util import pexpect
 from mininet.util import quietRun
 
 class testNATNet( unittest.TestCase ):
diff --git a/examples/test/test_numberedports.py b/examples/test/test_numberedports.py
index 81ee1879d..ea7d61e48 100755
--- a/examples/test/test_numberedports.py
+++ b/examples/test/test_numberedports.py
@@ -5,7 +5,7 @@
 """
 
 import unittest
-import pexpect
+from mininet.util import pexpect
 from collections import defaultdict
 from mininet.node import OVSSwitch
 
diff --git a/examples/test/test_popen.py b/examples/test/test_popen.py
index c7f83f01e..f41d53125 100755
--- a/examples/test/test_popen.py
+++ b/examples/test/test_popen.py
@@ -5,7 +5,7 @@
 """
 
 import unittest
-import pexpect
+from mininet.util import pexpect
 
 class testPopen( unittest.TestCase ):
 
diff --git a/examples/test/test_scratchnet.py b/examples/test/test_scratchnet.py
index 43d8286f1..3d44955fb 100755
--- a/examples/test/test_scratchnet.py
+++ b/examples/test/test_scratchnet.py
@@ -5,7 +5,7 @@
 """
 
 import unittest
-import pexpect
+from mininet.util import pexpect
 
 class testScratchNet( unittest.TestCase ):
 
diff --git a/examples/test/test_simpleperf.py b/examples/test/test_simpleperf.py
index 027c03935..93a36aa47 100755
--- a/examples/test/test_simpleperf.py
+++ b/examples/test/test_simpleperf.py
@@ -5,7 +5,7 @@
 """
 
 import unittest
-import pexpect
+from mininet.util import pexpect
 import sys
 from mininet.log import setLogLevel
 
diff --git a/examples/test/test_sshd.py b/examples/test/test_sshd.py
index 6a39bba22..193b1eaf1 100755
--- a/examples/test/test_sshd.py
+++ b/examples/test/test_sshd.py
@@ -5,7 +5,7 @@
 """
 
 import unittest
-import pexpect
+from mininet.util import pexpect
 from mininet.clean import sh
 
 class testSSHD( unittest.TestCase ):
diff --git a/examples/test/test_tree1024.py b/examples/test/test_tree1024.py
index e26af2ca7..06f8e4933 100755
--- a/examples/test/test_tree1024.py
+++ b/examples/test/test_tree1024.py
@@ -5,7 +5,7 @@
 """
 
 import unittest
-import pexpect
+from mininet.util import pexpect
 import sys
 
 class testTree1024( unittest.TestCase ):
diff --git a/examples/test/test_treeping64.py b/examples/test/test_treeping64.py
index ae02afc50..8c346cd1a 100755
--- a/examples/test/test_treeping64.py
+++ b/examples/test/test_treeping64.py
@@ -5,7 +5,7 @@
 """
 
 import unittest
-import pexpect
+from mininet.util import pexpect
 import sys
 
 class testTreePing64( unittest.TestCase ):
diff --git a/examples/test/test_vlanhost.py b/examples/test/test_vlanhost.py
index d68448f50..6781cced4 100644
--- a/examples/test/test_vlanhost.py
+++ b/examples/test/test_vlanhost.py
@@ -5,7 +5,7 @@
 """
 
 import unittest
-import pexpect
+from mininet.util import pexpect
 import sys
 from mininet.util import quietRun