tf.data.experimental.cardinality

Returns the cardinality of dataset, if known.

Compat aliases for migration

See Migration guide for more details.

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.

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Last updated 2020-10-01 UTC.

Args