title: TypeError: 'tuple' object cannot be interpreted as an integer"
body: <p>I'm trying to make a super basic evolution simulator to generate ten random "creatures" that are each a number value and then give them a random "mutation" but it keeps throwing me this error: "for i in range(creatures):
  TypeError: 'tuple' object cannot be interpreted as an integer"</p>
  
  <pre><code>import random
  from random import randint
  
  creatures = (random.randint(1, 10), random.randint(1, 10))
  
  print(creatures)
  
  for i in range(creatures):
      mutation = random.randint(1, 2)
      newEvolution = creatures[i] + mutation
  
  print("New evolution", newEvolution)
  </code></pre>