title: Is it possible to solve with python to run two executable and they can communicate each other (stdin/stdout)?
body: <p>I have two executable e.g A.exe, B.exe.
  Is it possible with python subprocess popen to the two executable communicate each other through stdin/stdout:</p>
  
  <pre><code>A = Popen("A.exe",...,stdin=B.stdout, stdout=PIPE)
  B = Popen("B.exe",...,stdin=A.stdout, stdout=PIPE) ?
  </code></pre>
  
  <p>(where A.exe contains print/scanf pairs, and B.exe the scanf/printfs.)</p>