Check if dictionary key is filled with list of 2 numbers
<p>I have a dictionary:</p>

<pre><code>self.currently_occupied = {obj:[0, 0]}
</code></pre>

<p>I need to check if the value of obj contains anything other than two numbers in a list </p>

<p>Example:</p>

<pre><code>obj:[58, -234]  is ok
obj:[32]        is not 
obj:[]          is not
obj:[4, k]      is not
</code></pre>
