I am not sure how to use for loops to returns number of entries in table that are unique with python?
<p>Example:</p>

<pre><code>help([[1, 2, 2], [1, 1, 2]])
</code></pre>

<p>should returns 2.</p>

<pre><code>def help(num):
    lst = ()
    for n in num:  
        return(len(lst))
</code></pre>

<p>So I need the sum of all numbers in the table.</p>

<p>Another example:</p>

<pre><code>help([[32, 12, 52, 63], [32, 64, 67, 52], [64, 64, 17, 34], [34, 17, 76, 32]]) 
</code></pre>

<p>returns: 9 </p>
