title: How to pair up two lists?
body: <p>I'm a bit of a Python beginner so I apologise if this is a very basic question.</p>
  
  <p>I have two lists of data which are obtained from:</p>
  
  <pre><code>with filein as f:
          reader=csv.reader(f)
          xs, ys = zip(*reader)
  </code></pre>
  
  <p>I would like to create a loop which would take the first item in "xs" and the first item in "ys" and print them out. I would then like to loop back and repeat for the second item in both lists and so forth.</p>
  
  <p>I had thought something like:</p>
  
  <pre><code>for x in xs and y in ys:
  </code></pre>
  
  <p>Or </p>
  
  <pre><code>for x in xs:
      for y in ys:
  </code></pre>
  
  <p>But neither of these seems to give the desired result.</p>