title: Print doesn't print when it's in map, Python
body: <pre><code>primes = [2,3,5,7..] (prime numbers)
  map(lambda x:print(x),primes)
  </code></pre>
  
  <p>It does not print anything.
  Why is that?
  I've tried </p>
  
  <pre><code>sys.stdout.write(x)
  </code></pre>
  
  <p>too, but doesn't work either.</p>