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copied!<p>This is a straightforward port of <a href="http://linux.die.net/man/1/tee" rel="nofollow noreferrer"><code>tee</code></a> to Python.</p> <pre><code>import sys sinks = sys.argv[1:] sinks = [open(sink, "w") for sink in sinks] sinks.append(sys.stderr) while True: input = sys.stdin.read(1024) if input: for sink in sinks: sink.write(input) else: break </code></pre> <p>I'm running on Linux right now but this ought to work on most platforms.</p> <hr> <p>Now for the <code>subprocess</code> part, I don't know how you want to 'wire' the subprocess's <code>stdin</code>, <code>stdout</code> and <code>stderr</code> to your <code>stdin</code>, <code>stdout</code>, <code>stderr</code> and file sinks, but I know you can do this:</p> <pre><code>import subprocess callee = subprocess.Popen( ["python", "-i"], stdin = subprocess.PIPE, stdout = subprocess.PIPE, stderr = subprocess.PIPE ) </code></pre> <p>Now you can access <a href="http://docs.python.org/library/subprocess.html#subprocess.Popen.stdin" rel="nofollow noreferrer"><code>callee.stdin</code></a>, <a href="http://docs.python.org/library/subprocess.html#subprocess.Popen.stdout" rel="nofollow noreferrer"><code>callee.stdout</code></a> and <a href="http://docs.python.org/library/subprocess.html#subprocess.Popen.stderr" rel="nofollow noreferrer"><code>callee.stderr</code></a> like normal files, enabling the above "solution" to work. If you want to get the <a href="http://docs.python.org/library/subprocess.html#subprocess.Popen.returncode" rel="nofollow noreferrer"><code>callee.returncode</code></a>, you'll need to make an extra call to <a href="http://docs.python.org/library/subprocess.html#subprocess.Popen.poll" rel="nofollow noreferrer"><code>callee.poll()</code></a>.</p> <p>Be careful with writing to <code>callee.stdin</code>: if the process has exited when you do that, an error may be rised (on Linux, I get <code>IOError: [Errno 32] Broken pipe</code>).</p>

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