title: Search in all dataset values in python
body: <p>I am trying to find a value in my dataset</p>
  
  <p>I know we can do this </p>
  
  <pre><code>df.loc[df['name'].isin('john', 'tom')]
  </code></pre>
  
  <p>but can we do it differently to search all the columns and rows in a dataset to find these words</p>
  
  <p>i tried that but did not work</p>
  
  <pre><code>df.iloc['john'.isin(df[:])] 
  </code></pre>
  
  <p>any idea how to do that?</p>