<p><a href="http://docs.python.org/library/subprocess.html#subprocess.call" rel="nofollow noreferrer">^{<cd1>}</a>函数只是<a href="http://svn.python.org/view/python/trunk/Lib/subprocess.py?view=markup" rel="nofollow noreferrer">^{<cd2>}</a>。您可以直接调用<code>Popen</code>,并使用<code>stdout=PIPE</code>参数读取<code>p.stdout</code>:</p>
<pre><code>#!/usr/bin/env python
import sys
from subprocess import Popen, PIPE
from threading import Thread
def tee(infile, *files):
"""Print `infile` to `files` in a separate thread."""
def fanout(infile, *files):
with infile:
for line in iter(infile.readline, b''):
for f in files:
f.write(line)
t = Thread(target=fanout, args=(infile,)+files)
t.daemon = True
t.start()
return t
def teed_call(cmd_args, **kwargs):
stdout, stderr = [kwargs.pop(s, None) for s in ['stdout', 'stderr']]
p = Popen(cmd_args,
stdout=PIPE if stdout is not None else None,
stderr=PIPE if stderr is not None else None,
**kwargs)
threads = []
if stdout is not None: threads.append(tee(p.stdout, stdout, sys.stdout))
if stderr is not None: threads.append(tee(p.stderr, stderr, sys.stderr))
for t in threads: t.join() # wait for IO completion
return p.wait()
outf, errf = open('out.txt', 'wb'), open('err.txt', 'wb')
assert not teed_call(["cat", __file__], stdout=None, stderr=errf)
assert not teed_call(["echo", "abc"], stdout=outf, stderr=errf, bufsize=0)
assert teed_call(["gcc", "a b"], close_fds=True, stdout=outf, stderr=errf)
</code></pre>