fix doc

1 files changed, 7 insertions, 1 deletions

diff --git a/src/python/doc/rips_complex_tflow_itf_ref.rst b/src/python/doc/rips_complex_tflow_itf_ref.rst
index 15ba4c8e..7300eba0 100644
--- a/src/python/doc/rips_complex_tflow_itf_ref.rst
+++ b/src/python/doc/rips_complex_tflow_itf_ref.rst
@@ -10,7 +10,7 @@ TensorFlow layer for Vietoris-Rips persistence
 Example of gradient computed from Vietoris-Rips persistence
 -----------------------------------------------------------
 
-.. code-block:: python
+.. testcode::
 
     from gudhi.tensorflow import *
     import numpy as np
@@ -23,9 +23,15 @@ Example of gradient computed from Vietoris-Rips persistence
     with tf.GradientTape() as tape:
         dgm = rl.call(X)
         loss = tf.math.reduce_sum(tf.square(.5*(dgm[:,1]-dgm[:,0])))
+
     grads = tape.gradient(loss, [X])
     print(grads[0].numpy())
 
+.. testoutput::
+
+    [[-0.5 -0.5]
+     [ 0.5  0.5]]
+
 Documentation for RipsLayer
 ---------------------------