Echo call to VLC bash using subprocess.Popen on Linux

[LuukS001]

When I use communicate() the script hangs, just like when I use stdout.read()...
This is the script:

p = subprocess.Popen(['vlc -I oldrc --rc-unix=/home/user/Documents/Sockets/socket1.sock'], shell = True, stdout = subprocess.PIPE, stderr = subprocess.PIPE)
out, err = p.communicate()

p = subprocess.Popen(['echo enqueue /home/user/Documents/DualscreenVLC/videos/MVI_2534.MP4 } nc -U /home/user/Documents/Sockets/socket1.sock'], shell = True, stdout = subprocess.PIPE, stderr = subprocess.PIPE)
out, err = p.communicate()

I can try upgrading to python 3.5 tomorrow but it maybe it is related to the operating system as I am not finding this issue anywhere else...