Update test_example.py

Signed-off-by: xavier dupré <[email protected]>

Author: sdpython

tests/test_example.py

@@ -22,12 +22,14 @@ def run_example(self, name, expected=None):
         proc = subprocess.run(('python %s' % full).split(),
                               capture_output=True, check=True)
         self.assertEqual(0, proc.returncode)
+        out = proc.stdout.decode('ascii')
+        if 'tensorflow_hub not installed' in out:
+            return
+        err = proc.stderr.decode('ascii')
+        self.assertTrue(err is not None)
         if expected is not None:
-            out = proc.stdout.decode('ascii')
             for exp in expected:
                 self.assertIn(exp, out)
-        err = proc.stderr.decode('ascii')
-        self.assertTrue(err is not None)
 
     @check_tf_min_version("2.3", "use tf.keras")
     @check_opset_min_version(12)