import os
import subprocess
from subprocess import Popen, PIPE
# run the shell as a subprocess:
cmd2 = "pint www.baidu.com"
import os
import pty
import select
from subprocess import Popen, STDOUT
master_fd, slave_fd = pty.openpty() # provide tty to enable
# line-buffering on ruby's side
proc = Popen(command,
stdout=slave_fd, stderr=STDOUT, close_fds=True)
timeout = .04 # seconds
while 1:
ready, _, _ = select.select([master_fd], [], [], timeout)
if ready:
data = os.read(master_fd, 512)
if not data:
break
print("got " + repr(data))
elif proc.poll() is not None: # select timeout
assert not select.select([master_fd], [], [], 0)[0] # detect race condition
break # proc exited
os.close(slave_fd) # can't do it sooner: it leads to errno.EIO error
os.close(master_fd)
proc.wait()
print("This is reached!")
