title: Series object has no attribute 'strip'
body: <p>Here is a sample pandas DataFrame:</p>
  
  <pre><code>id  product_type    qty
  1   product_type 1  100
  2   product_type 2  300
  3   product_type 1  200
  </code></pre>
  
  <p>I want to delete <code>product_type</code> in the column <code>product_type</code> in order obtain the following new DataFrame:</p>
  
  <pre><code>id  product_type    qty
  1   1               100
  2   2               300
  3   1               200
  </code></pre>
  
  <p>This is how I tried to do it:</p>
  
  <pre><code>orders['product_type'].strip('product_type ')
  </code></pre>
  
  <p>However there is an error:</p>
  
  <pre><code>'Series' object has no attribute 'strip'
  </code></pre>