tf.data.experimental.cardinality

Returns the cardinality of dataset, if known.

View aliases

Compat aliases for migration

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.