Merge pull request #30107 from feihugis:Issue_28248_Tape_Watch_Warning

PiperOrigin-RevId: 255187877

tensorflow/python/ops/script_ops.py

@@ -104,8 +104,11 @@ class EagerFunc(object):
     """Passes `args` to `self._func`, which is executed eagerly."""
 
     with context.eager_mode(), backprop.GradientTape() as tape:
+      # Only watch tensors with a floating dtype.
       for tensor in args:
-        tape.watch(tensor)
+        for t in nest.flatten(tensor):
+          if t.dtype.is_floating:
+            tape.watch(t)
       ret = self._func(*args)
       # Use tf.identity to copy the returned tensors to device if neccesary.
       with ops.device(device):