title: Tuples in For Loops - Python
body: <p>I want to subtract <strong>1</strong> from every digit in a tuple using <code>for</code> loop in Python.</p>
  <p>I don't understand why my code is returning the original tuple instead of the desired one. Here is the code:</p>
  <pre><code>tuple = (3, 2)
  for i in tuple:
    i -= 1
  print(tuple)
  </code></pre>
  <p>Any idea ?</p>