title: Math brackets in python?
body: <p>Now I'm talking about <strong>MATH</strong> brackets, not python brackets, I know that parentheses <strong>()</strong> work like in maths, ex:</p>
  
  <pre><code>i = 5*(2+2)
  print (i)
  #output = 20
  </code></pre>
  
  <p>But square brackets <strong>[]</strong> and curly brackets <strong>{}</strong> don't work... (I know why they don't work)</p>
  
  <p>Thank you,
  Using Python 3.2.2</p>