diff -up pyqtgraph-0.9.10/tools/setupHelpers.py.pytestpath pyqtgraph-0.9.10/tools/setupHelpers.py

--- pyqtgraph-0.9.10/tools/setupHelpers.py.pytestpath	2014-12-24 14:34:58.000000000 -0500

+++ pyqtgraph-0.9.10/tools/setupHelpers.py	2015-08-04 00:12:40.676570620 -0400

@@ -233,7 +233,7 @@ def unitTests():

     """

     try:

         if sys.version[0] == '3':

-            out = check_output('PYTHONPATH=. py.test-3', shell=True)

+            out = check_output('PYTHONPATH=. py.test-3.4', shell=True)

         else:

             out = check_output('PYTHONPATH=. py.test', shell=True)

         ret = 0