pan class="number">1</span><span class="operator">:</span><span class="number">3</span>]

<span class="comment"># Reduction</span>
<span class="keyword">c</span> <span class="operator">=</span> <span class="keyword">a</span>.<span class="function">mean</span>(<span class="keyword">axis</span><span class="operator">=</span><span class="number">0</span>)

<span class="comment"># This crashes at runtime</span>
<span class="keyword">x</span> <span class="operator">=</span> <span class="function">np.ones</span>(