tf.data.experimental.cardinality(dataset)
Defined in tensorflow/python/data/experimental/ops/cardinality.py
.
Returns the cardinality of dataset
, if known.
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
: Atf.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.