如何在Python中同时打印输出

Question

print "Trying to connect VM "
try:
    ssh=paramiko.SSHClient()
    ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
    ssh.connect('hostname',username='abc',password='1234')
    print ("Connected \n")
    command1='cd '+ PATH + " ; ls -ltr %s/abc.bin | awk '{print $9}' | cut -d '/' -f 8 | xargs grid -h " + MACHINE_TYPE + " -f "
    stdin, stdout, stderr = ssh.exec_command(command1)
    for line in stdout:
        print line
    except paramiko.AuthenticationException:
       print ("failed to connect \n")
       sys.exit(1)
       ssh.close()

这里stdout是一个巨大的输出，它将连续打印约600行。直到ssh.exec_command(command1)为止，这将无法打印stdout。我也在控制台上寻找同步输出...任何帮助都会很棒！