title: How to drop a row of a pandas
body: <p>Dataset</p>
  <pre><code>f = pd.DataFrame(np.arange(16).reshape(4, 4),columns=['A', 'B', 'C', 'D'])
  </code></pre>
  <p>I tried the below way, but the column is not getting removed. Please help me!</p>
  <pre><code>f.drop([3])
  f.head()
  </code></pre>
  <p>I even tried iloc method, but no improvements were there. Please help me!</p>