STINNER Victor added the comment: > How do you do that with the subprocess module
Something like that: --- import subprocess ls = subprocess.Popen(["ls", "-1"], stdout=subprocess.PIPE) wc = subprocess.Popen(["wc", "-l"], stdin=ls.stdout) ls.wait() wc.wait() --- > and why doesn't that work with asyncio? It's possible with the two methods of an event loop, but I'm requesting this feature for the high-level API: asyncio.subprocess. create_subprocess_shell("cat", stdout=subprocess.PIPE) starts immediatly to consume stdout, before I can connect the pipe to "wc" stdin. Currently, the asyncio.subprocess is designed to be able to write: --- proc = yield from create_subprocess_exec("ls", stdout=subprocess.PIPE) stdout, _ = yield from proc.communicate() --- ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue21080> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com