title: Pandas - Turning column of mixed positive / negative numbers to positive
body: <p>In my dataframe I have a column containing numbers, some positive, some negative. Example</p>
  
  <pre><code>    Amount
  0  -500
  1   659
  3   -10
  4   344
  </code></pre>
  
  <p>I want to turn all numbers Df['Amount'] into positive numbers. I thought about multiplying all numbers with *-1. But though this turns negative numbers positive, and also does the reverse. </p>
  
  <p>Is there a better way to do this?</p>