d by <img class="math"
                                                                                                            src="../_images/math/acd0b85a868efaff34cf3421d653bead5bd67c98.png"
                                                                                                            alt="\frac{|W|}{T}"/>,
                            by calling the method <code class="docutils literal notranslate"><span class="pre">.nb_nodes()</span></code>.
                        </p>
                