class_docstr: A dataset for MNIST.
class_docstr_tok: ["A","dataset","for","MNIST","."]
code: def num_examples(self):
      return self._num_examples
  
file_path: magenta/magenta/models/latent_transfer/local_mnist.py
imports: import gzip
  import os
  import numpy
  import tensorflow.compat.v1
label_desc: Use image node_id 4 for calling the DataSet obj's underlying member method code with example usage: obj.num_examples() and returns: self