Try Repy!

# To loop over two or more sequences at the same time, 
# the entries can be paired with the zip() function.

names = ['John', 'Mary', 'Paul']
answers = ['yellow', 'pink', 'blue']

for name, color in zip(names, answers):
  log( name + ' likes ' + color)

# UDP Listener
#
# This snippet listens for UDP messages. In order to receive 
# messages, who have to run a sender program e.g. the succeeding snippet
# in another sandbox (Browser)

def process(remoteIP, remoteport, message, commhandle):
    log("Receiving: " + message)

if callfunc == 'initialize':
    port = 12345
    ip = getmyip()
    log ("Registering UDP listener... ")
    log ("Listening on " + ip + ":" + str(port) + " for 15 seconds ... ")
    listener = recvmess(getmyip(), 12345, process)
    sleep(15)
    log ("Deregistering UDP listerner.")
    stopcomm(listener)
    log ("Good Bye!")

# UDP Sender
#
# This snippet sends UDP messages. You can run the preceeding snippet
# in another sandbox (Browser), which will receive there here send
# messages.

if callfunc == 'initialize':
    log("Starting to send 10 UDP messages... ")
    for x in range(0, 10):
        sleep(0.5)
        log("Sending: " + str(x) + ". Hello Repy (UDP)")
        sendmess(getmyip(), 12345, str(x) + ". Hello Repy (UDP)")
    log("Good Bye!")

# TCP Listener
# Listens for a TCP connection for 8 Seconds. Try it together
# with succeeding Snippet.

def process(remip, remport, so, thishandle, listenhandle):
    log("Conncection established.")
    log("Receiving: " + so.recv(512) )
    log("Closing connection...")
    
if callfunc == 'initialize':
    log ("Registering TCP listener... ")
    log ("Listening on " + getmyip() + ":12345 for 8 seconds ... ")
    listenhandle = waitforconn(getmyip(), 12345, process)
    sleep(8)
    log("Closing listener...")
    stopcomm(listenhandle)
    log("Good Bye!")

# TCP Sender
#
# This snippet establishes a TCP connection and sends messages.
# To establish the connection someone has to listen for it. 
# You can start the preceeding snippet in another sandbox (Browser), 
# to listen for the connection and the according bytestream.

if callfunc == 'initialize':
    log ("Establishing TCP connection with " + getmyip() + ":12345")
    so = openconn(getmyip(), 12345)
    log("Sending: Hello Repy (TCP)" )
    so.send("Hello Repy (TCP)")
    log("Good Bye!")