title: Initializing a 2d array in one line in Python
body: <p>I am wondering, how i can shorten this:</p>
  
  <pre><code>test = [1, 2, 3]
  test[0] = [1, 2, 3]
  test[1] = [1, 2, 3]
  test[2] = [1, 2, 3]
  </code></pre>
  
  <p>I tried something like this:</p>
  
  <pre><code>test = [1[1, 2, 3], 2 [1, 2, 3], 3[1, 2, 3]]
  #or
  test = [1 = [1, 2, 3], 2 = [1, 2, 3], 3 = [1, 2, 3]] #I know this is dumb, but at least I tried...
  </code></pre>
  
  <p>But it's not functioning :|</p>
  
  <p>Is this just me beeing stupid and trying something that can not work, or is there a proper Syntax for this, that I don't know about?</p>