Lists in Python - Each array in different row : <p>how can I create a new list with the following format.</p>

<p>The 3 arrays inside each row should be in different rows.</p>

<pre><code>a= [['111,0.0,1', '111,1.27,2', '111,3.47,3'],
    ['222,0.0,1', '222,1.27,2', '222,3.47,3'],
    ['33,0.0,1', '33,1.27,2', '33,3.47,3'],
    ['44,0.0,1', '44,1.27,2', '4,3.47,3'],
    ['55,0.0,1', '55,1.27,2', '55,3.47,3']]
</code></pre>

<p>Final desired ouput:</p>

<pre><code> b=[['111,0.0,1', 
  '111,1.27,2', 
  '111,3.47,3',
  '222,0.0,1', 
  '222,1.27,2', 
  '222,3.47,3',
  '33,0.0,1', 
  '33,1.27,2', 
  '33,3.47,3',
  '44,0.0,1',
  '44,1.27,2',
  '44,3.47,3',
  '55,0.0,1', 
  '55,1.27,2', 
  '55,3.47,3']]
</code></pre>
