tf.data.experimental.cardinality

Returns the cardinality of dataset, if known.

Compat aliases for migration

See Migration guide for more details.

tf.compat.v1.data.experimental.cardinality, `tf.compat.v2.data.experimental.cardinality`

tf.data.experimental.cardinality(
    dataset
)

The operation returns the cardinality of dataset. The operation may return tf.data.experimental.INFINITE_CARDINALITY if dataset contains an infinite number of elements or tf.data.experimental.UNKNOWN_CARDINALITY if the analysis fails to determine the number of elements in dataset (e.g. when the dataset source is a file).

Args
`dataset`	A `tf.data.Dataset` for which to determine cardinality.

Returns
A scalar `tf.int64` `Tensor` representing the cardinality of `dataset`. If the cardinality is infinite or unknown, the operation returns the named constant `INFINITE_CARDINALITY` and `UNKNOWN_CARDINALITY` respectively.

Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see the Google Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.

Last updated 2020-10-01 UTC.

Args