title: Pandas: AttributeError: 'Series' object has no attribute 'style'
body: <p>I'm trying to color just a certain output, something like this</p>
  <pre><code>df['a'] = df['a'].fillna(df['b'].map(s)).style.applymap(lambda x: &quot;background-color:yellow&quot;)
  </code></pre>
  <p>so I get the error</p>
  <pre><code>AttributeError: 'Series' object has no attribute 'style'
  </code></pre>
  <p>How can I make it right and color only the output that comes out of this?</p>