tf.compat.v1.placeholder

Inserts a placeholder for a tensor that will be always fed.

tf.compat.v1.placeholder(
    dtype, shape=None, name=None
)

For example:

x = tf.compat.v1.placeholder(tf.float32, shape=(1024, 1024))
y = tf.matmul(x, x)

with tf.compat.v1.Session() as sess:
  print(sess.run(y))  # ERROR: will fail because x was not fed.

  rand_array = np.random.rand(1024, 1024)
  print(sess.run(y, feed_dict={x: rand_array}))  # Will succeed.

Args
`dtype`	The type of elements in the tensor to be fed.
`shape`	The shape of the tensor to be fed (optional). If the shape is not specified, you can feed a tensor of any shape.
`name`	A name for the operation (optional).

Returns
A `Tensor` that may be used as a handle for feeding a value, but not evaluated directly.

Raises
`RuntimeError`	if eager execution is enabled

Eager Compatibility

Placeholders are not compatible with eager execution.

© 2020 The TensorFlow Authors. All rights reserved.
Licensed under the Creative Commons Attribution License 3.0.
Code samples licensed under the Apache 2.0 License.
https://www.tensorflow.org/versions/r2.4/api_docs/python/tf/compat/v1/placeholder