diff --git a/Lib/test/test_builtin.py b/Lib/test/test_builtin.py
index a4ae21a..b430822 100644
--- a/Lib/test/test_builtin.py
+++ b/Lib/test/test_builtin.py
@@ -11,10 +11,6 @@
 warnings.filterwarnings("ignore", "integer argument expected",
                         DeprecationWarning, "unittest")
 
-# count the number of test runs.
-# used to skip running test_execfile() multiple times
-numruns = 0
-
 class Squares:
 
     def __init__(self, max):
@@ -399,57 +395,6 @@
                 return 1 # used to be 'a' but that's no longer an error
         self.assertRaises(TypeError, eval, 'dir()', globals(), C())
 
-    # Done outside of the method test_z to get the correct scope
-    z = 0
-    f = open(TESTFN, 'w')
-    f.write('z = z+1\n')
-    f.write('z = z*2\n')
-    f.close()
-    execfile(TESTFN)
-
-    def test_execfile(self):
-        global numruns
-        if numruns:
-            return
-        numruns += 1
-
-        globals = {'a': 1, 'b': 2}
-        locals = {'b': 200, 'c': 300}
-
-        self.assertEqual(self.__class__.z, 2)
-        globals['z'] = 0
-        execfile(TESTFN, globals)
-        self.assertEqual(globals['z'], 2)
-        locals['z'] = 0
-        execfile(TESTFN, globals, locals)
-        self.assertEqual(locals['z'], 2)
-
-        class M:
-            "Test mapping interface versus possible calls from execfile()."
-            def __init__(self):
-                self.z = 10
-            def __getitem__(self, key):
-                if key == 'z':
-                    return self.z
-                raise KeyError
-            def __setitem__(self, key, value):
-                if key == 'z':
-                    self.z = value
-                    return
-                raise KeyError
-
-        locals = M()
-        locals['z'] = 0
-        execfile(TESTFN, globals, locals)
-        self.assertEqual(locals['z'], 2)
-
-        unlink(TESTFN)
-        self.assertRaises(TypeError, execfile)
-        self.assertRaises(TypeError, execfile, TESTFN, {}, ())
-        import os
-        self.assertRaises(IOError, execfile, os.curdir)
-        self.assertRaises(IOError, execfile, "I_dont_exist")
-
     def test_exec(self):
         g = {}
         exec('z = 1', g)
diff --git a/Lib/test/test_multibytecodec.py b/Lib/test/test_multibytecodec.py
index 32c48fb..c2f34e5 100644
--- a/Lib/test/test_multibytecodec.py
+++ b/Lib/test/test_multibytecodec.py
@@ -49,7 +49,7 @@
         try:
             for enc in ALL_CJKENCODINGS:
                 print('# coding:', enc, file=io.open(TESTFN, 'w'))
-                execfile(TESTFN)
+                exec(open(TESTFN).read())
         finally:
             test_support.unlink(TESTFN)
 
diff --git a/Lib/test/test_pkg.py b/Lib/test/test_pkg.py
index 1a3f2a9..907359b 100644
--- a/Lib/test/test_pkg.py
+++ b/Lib/test/test_pkg.py
@@ -63,7 +63,7 @@
         sys.path.insert(0, root)
         if verbose: print("sys.path =", sys.path)
         try:
-            execfile(fname, globals(), {})
+            exec(open(fname).read(), globals(), {})
         except:
             traceback.print_exc(file=sys.stdout)
     finally:
diff --git a/Lib/test/test_univnewlines.py b/Lib/test/test_univnewlines.py
index ae4c442..7810cae 100644
--- a/Lib/test/test_univnewlines.py
+++ b/Lib/test/test_univnewlines.py
@@ -78,13 +78,6 @@
         data = fp.readlines()
         self.assertEqual(data, DATA_SPLIT[1:])
 
-    def test_execfile(self):
-        namespace = {}
-        execfile(test_support.TESTFN, namespace)
-        func = namespace['line3']
-        self.assertEqual(func.__code__.co_firstlineno, 3)
-        self.assertEqual(namespace['line4'], FATX)
-
 
 class TestNativeNewlines(TestGenericUnivNewlines):
     NEWLINE = None