class tf.errors.FailedPreconditionErrorSee the guide: Running Graphs > Error classes and convenience functions
Operation was rejected because the system is not in a state to execute it.
This exception is most commonly raised when running an operation that reads a tf.Variable before it has been initialized.
error_codeThe integer error code that describes the error.
messageThe error message that describes the error.
node_defThe NodeDef proto representing the op that failed.
opThe operation that failed, if known.
N.B. If the failed op was synthesized at runtime, e.g. a Send or Recv op, there will be no corresponding tf.Operation object. In that case, this will return None, and you should instead use the tf.OpError.node_def to discover information about the op.
The Operation that failed, or None.
__init__(node_def, op, message)Creates a FailedPreconditionError.
argsDefined in tensorflow/python/framework/errors_impl.py.
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Licensed under the Creative Commons Attribution License 3.0.
Code samples licensed under the Apache 2.0 License.
https://www.tensorflow.org/api_docs/python/tf/errors/FailedPreconditionError