Function execute

tools/python/utils/device.py:29–66

(cmd, verbose=True)

def execute(cmd, verbose=True):
    if verbose:
        print("CMD> %s" % cmd)
    p = subprocess.Popen([cmd],
                         shell=True,
                         stdout=subprocess.PIPE,
                         stderr=subprocess.STDOUT,
                         stdin=subprocess.PIPE,
                         universal_newlines=True)

    if not verbose:
        # use p.communicate instead of p.wait to avoid such situation:
        # pipe is filled and the child process is blocked.
        out, err = p.communicate()
        if p.returncode != 0:
            raise Exception("errorcode: {}".format(p.returncode))
        return out

    buf = []

    while p.poll() is None:
        line = p.stdout.readline().strip()
        if verbose:
            print(line)
        buf.append(line)

    for li in p.stdout:
        line = li.strip()
        if verbose:
            print(line)
        buf.append(line)

    if p.returncode != 0:
        if verbose:
            print(line)
        raise Exception("errorcode: %s" % p.returncode)

    return "\n".join(buf)


class Device(object):