title: Python.pandas: how to select rows where objects start with letters 'PL'
body: <p>I have specific problem with pandas: I need to select rows in dataframe which start with specific letters. 
  Details: I've imported my data to dataframe and selected columns that I need. I've also narrowed it down to row index I need. Now I also need to select rows in other column where objects START with letters 'pl'. </p>
  
  <p><a href="https://i.stack.imgur.com/QWSg2.png" rel="noreferrer"><img src="https://i.stack.imgur.com/QWSg2.png" alt="Pasted here picture of how df looks like now for better view"></a></p>
  
  <p>Is there any solution to select row only based on first two characters in it?</p>
  
  <p>I was thinking about </p>
  
  <pre><code>pl = df[‘Code’] == pl*
  </code></pre>
  
  <p>but it won't work due to row indexing. Advise appreciated! </p>