title: ValueError: Can only compare identically-labeled Series objects python
body: <pre><code>df = df1.loc[df1['CUST_ACCT_KEY'] != df2['CUST_ACCT_KEY']]
  </code></pre>
  
  <p>When I execute the above command, I get the following error:</p>
  
  <blockquote>
    <p>ValueError: Can only compare identically-labeled Series objects</p>
  </blockquote>
  
  <p>What am I doing wrong?*</p>
  
  <p>The dtypes of both the column are <code>int64</code>.</p>