title: Best way to do file transfer via SCP using python and a .pem file
body: <p>I wanna to replicate that command in python:</p>
  
  <pre><code>scp -i aKey.pem aFile.txt ec2-user@serverIp:folder
  </code></pre>
  
  <p>I found some examples of SCP but didn't found neither using a .pem key, and without informing the user password. How can I make this in python?</p>