Python UDP over internet without port forwarding

Question

Trying to send some data over UDP from computer1 to computer2 without port forwarding. Can't find anything else than localhost stuff. Let's say sender and receiver know each other's ports and public IPs.

Is it even possible to do it?

Send

        client_socket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
        message = b'sadasd'
        addr = ("x.y.z.y", 6700)
        client_socket.sendto(message, addr)

Receive

    server_socket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
    server_socket.bind(('', 6700))
    while True:
        message, address = server_socket.recvfrom(1024)
        print(address, "Sent ", message)