title: how to make array from arrays in python
body: <p>I want to make np.array from many arrays inside the array, so my object shape should be <code>(n, 43,49)</code>.</p>
  <p>I am trying to do this now:</p>
  <pre><code>b = data[data['column'] == list_of_column_names[0]].values
  
  for i in range (1,4):
  list_of_ekch[i] = (data[data['column'] == list_of_column_names[i]].values)
  b = np.array((list_of_ekch[i] ,  b))
  </code></pre>
  <p>So in my result I am geting such shape: <code>(2,)</code></p>
  <p>But my goal from this example to get shape : <code>(4,)</code></p>
  <p>Maybe someone could help for me?</p>
  <p>I tried to get array from matrices.</p>