title: Expotential growth of symbols in python?
body: <p>How would i be able to display a triangle shape that grows exponentially with each line?</p>
  
  <p>e.g. if the user inputs 4 (for the amount lines) the output should display.</p>
  
  <pre><code>*
  **
  ****
  ********
  </code></pre>
  
  <p>I am aware that i will need to use the for loop its just the math i'm struggling with and whether I need a nested loop or not</p>