Resetting default graph does not remove variables

Question

I am looking for a way to quickly change a graph within an interactive session in Jupyter in order to test different structures. Initially I wanted to simple delete existing

Answer 1

When you reset the default graph, you do not remove the previous Tensors created. When calling tf.reset_default_graph(), a new graph is created and set to default.

Here is an example to illustrate:

x = tf.constant(1)
print tf.get_default_graph() == x.graph  # prints True

tf.reset_default_graph()
print tf.get_default_graph() == x.graph  # prints False

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The error you had indicates that two tensors must be from the same graph, which means you are still using some tensors from the previous graph AND from the current default graph.

The easy fix is to create again the two placeholders images_placeholder and points_placeholder