find Key for value in python when key associated with multiple values
<p>For a dictionary of the type</p>

<pre><code>{'key1': ['v1','v2','v3', ...],
 'key2': ['v2','v4', ...],
  ... }
</code></pre>

<p>How do I</p>

<ol>
<li>Find any key associated with a value v</li>
<li>Print that k:[value set] pair to a new dictionary</li>
</ol>
