tree e53e85c66f955af585573600de421f8c1cb4d851
parent 784ea35c017c66ac6ce69892402f060674cb3f3b
author Scott Zhu <scottzhu@google.com> 1612216680 -0800
committer TensorFlower Gardener <gardener@tensorflow.org> 1612218053 -0800

Expose types.core.Tensor as tf.__internal__ API.
It is used in keras for type checking and super class (for autocast variable).

Also rewrite the keras logic for the sparse/dense tensor checking.

PiperOrigin-RevId: 355020378
Change-Id: I47df3f374bb7f83e114659f76887f687c46ecb51