tf.errors.FailedPreconditionError

Raised when some prerequisites are not met when running an operation.

Inherits From: OpError

View aliases

Compat aliases for migration

See Migration guide for more details.

tf.compat.v1.errors.FailedPreconditionError

tf.errors.FailedPreconditionError(
    node_def, op, message, *args
)

This typically indicates that system is not in state to execute the operation and requires preconditions to be met before successfully executing current operation.

For example, this exception is commonly raised when running an operation that reads a tf.Variable before it has been initialized.

Attributes
error_code	The integer error code that describes the error.
experimental_payloads	A dictionary describing the details of the error.
message	The error message that describes the error.
node_def	The NodeDef proto representing the op that failed.
op	The operation that failed, if known. Note: 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.errors.OpError.node_def to discover information about the op.