title: Assigning to columns in NumPy
body: <p>How could the following MATLAB code be written using NumPy?</p>
  <pre class="lang-matlab prettyprint-override"><code>A = zeros(5, 100);
  x = ones(5,1);
  A(:,1) = x;
  </code></pre>
  <p>Assigning to rows seems to work easily, but I couldn't find an example of assigning an array to a column of another array.</p>