title: python map() on zipped object
body: <p>I have two inputs lists <code>a</code> and <code>b</code> and a function which takes two inputs, let's say</p>
  
  <pre><code>def f(x, y): return x*y
  </code></pre>
  
  <p>How do I use <code>map()</code> for this setup? I tried</p>
  
  <pre><code>map(f, zip(a,b))
  </code></pre>
  
  <p>and got </p>
  
  <blockquote>
    <p>TypeError: f() takes exactly 2 arguments (1 given)</p>
  </blockquote>
  
  <p>It makes sense because I need to unpack the zipped input. How can I do that?</p>