title: "for loop" with two variables?
body: <p>How can I include two variables in the same <code>for</code> loop?</p>
  
  <pre><code>t1 = [a list of integers, strings and lists]
  t2 = [another list of integers, strings and lists]
  
  def f(t):  #a function that will read lists "t1" and "t2" and return all elements that are identical
      for i in range(len(t1)) and for j in range(len(t2)):
          ...
  </code></pre>