Calculating percentile counts in python : <p>I have a large array ex 
<code>[1,4,5,9,1,4,6,....]</code></p>

<p>I wanna calculate how many elements in total fall below each percentile.
Ex: </p>

<pre><code>4 numbers in 10percentile
7 numbers in 20 percentile
10 numbers in 30 percentile and so on till 100. ```

Is there a simple way to do this
</code></pre>
