title: Argument 1234 in numpy.random.RandomState
body: <p>I came across this line in a code :</p>
  
  <p><code>numpy_rng = numpy.random.RandomState(1234)</code></p>
  
  <p>I've seen in <a href="http://docs.scipy.org/doc/numpy/reference/generated/numpy.random.RandomState.html" rel="nofollow">the documentation</a> that <code>numpy.random.RandomState</code> is sort of a library in which one can find many probability distributions. I don't understand the argument 1234 however. Someone please explain ? </p>