fixes for py3.7 builds

PiperOrigin-RevId: 235128104

tensorflow/python/eager/tensor_test.py

@@ -66,11 +66,11 @@ class TFETensorTest(test_util.TensorFlowTestCase):
     device = ctx.device_name
     # Missing context.
     with self.assertRaisesRegexp(
-        TypeError, r"Required argument 'context' \(pos 2\) not found"):
+        TypeError, r".*argument 'context' \(pos 2\).*"):
       ops.EagerTensor(1, device=device)
     # Missing device.
     with self.assertRaisesRegexp(
-        TypeError, r"Required argument 'device' \(pos 3\) not found"):
+        TypeError, r".*argument 'device' \(pos 3\).*"):
       ops.EagerTensor(1, context=handle)
     # Bad dtype type.
     with self.assertRaisesRegexp(TypeError,

tensorflow/tools/docs/parser.py

@@ -502,7 +502,10 @@ def _gen_pairs(items):
   assert len(items) % 2 == 0
   items = iter(items)
   while True:
-    yield next(items), next(items)
+    try:
+      yield next(items), next(items)
+    except StopIteration:
+      return
 
 
 class _FunctionDetail(