Python子进程让子输出到文件和终端?我正在运行一个脚本,该脚本通过以下方法执行多个可执行文件subprocess.call(cmdArgs,stdout=outf, stderr=errf)什么时候outf/errf为“无”或“文件描述符”(不同的文件用于stdout/stderr).是否有任何方法可以执行每个exe,以便stdout和stderr一起写入文件和终端?
3 回答
慕田峪7331174
TA贡献1828条经验 获得超13个赞
call()Popen(*args, **kwargs).wait()Popenstdout=PIPEp.stdout:
import sysfrom subprocess import Popen, PIPEfrom threading import Threaddef tee(infile, *files):
"""Print `infile` to `files` in a separate thread."""
def fanout(infile, *files):
for line in iter(infile.readline, ''):
for f in files:
f.write(line)
infile.close()
t = Thread(target=fanout, args=(infile,)+files)
t.daemon = True
t.start()
return tdef 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', 'w'), open('err.txt', 'w')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)添加回答
举报
0/150
提交
取消
