title: sapply equivalent in python?
body: <p>I need to grow a python DataFrame one row at a time.</p>
  
  <p>In R, the <code>sapply()</code> function is fast &amp; efficent. E.g.,</p>
  
  <pre><code>sapply(1:100, function(i) rnorm(50) ) 
  </code></pre>
  
  <p>produces a 50 x 100 matrix of (standard normal random) numbers, which can then be transposed and/or converted into a data frame, as needed</p>
  
  <p>How to do same efficiently in python?</p>