A generic error that is raised when TensorFlow execution fails.

Whenever possible, the session will raise a more specific subclass of OpError from the tf.errors module.

node_def The node_def_pb2.NodeDef proto representing the op that failed, if known; otherwise None.
op The ops.Operation that failed, if known; otherwise None.
message The message string describing the failure.
error_code The error_codes_pb2.Code describing the error.

error_code The integer error code that describes the error.
message The error message that describes the error.