title: select rows from dataframe where any of the columns is higher 0.001
body: <p>I would normally write</p>
  
  <pre><code>df[ (df.Col1&gt;0.0001) | (df.Col2&gt;0.0001) | (df.Col3&gt;0.0001) ].index
  </code></pre>
  
  <p>to get the labels where the condition holds True. If I have many columns, and say I had a tuple</p>
  
  <pre><code>cols = ('Col1', 'Col2', 'Col3')
  </code></pre>
  
  <p><code>cols</code> is a subset of df columns.</p>
  
  <p>Is there a more succinct way of writing the above?</p>