import network

BLOCK_SIZE = 256
PORT = 53

def listen(port):
    if port is None:
        port = PORT

    print('Listening for data via DNS.')
    l = network.get_listener('UDP', port)

    print('Data Received:')
    while 1:
        data, addr = l.recvfrom(1500)

        dns = network.parse_dns(data)
        name = str(dns.get_q().get_qname()) 
        dec = network.decode_data(name.rstrip('.'))
        print(dec)


def send(server, port, data):
    if port is None:
        port = PORT

    print('Sending data to {0} via DNS.'.format(server))

    print('Data Sent:')
    for n in range(0, len(data), BLOCK_SIZE):
        block = data[n:n + BLOCK_SIZE]
        print block

        enc = network.encode_data(block)
        network.send_dns_query(server, port, enc)

import network

BLOCK_SIZE = 256
PORT = 53

def listen(port):
    if port is None:
        port = PORT

    print('Listening for data via DNS on port {0}.'.format(port))
    l = network.get_listener('UDP', port)

    print('Data Received:')
    while 1:
        data, addr = l.recvfrom(1500)

        dns = network.parse_dns(data)
        name = str(dns.get_q().get_qname()) 
        dec = network.decode_data(name.rstrip('.'))
        print(dec)


def send(server, port, data):
    if port is None:
        port = PORT

    print('Sending data via DNS to {0} on port {1}.'.format(server, port))

    print('Data Sent:')
    for n in range(0, len(data), BLOCK_SIZE):
        block = data[n:n + BLOCK_SIZE]
        print(block)

        enc = network.encode_data(block)
        network.send_dns_query(server, port, enc)

Add port to logging. Fix print statement.
Add port to logging. Fix print statement.

  import network
  
  BLOCK_SIZE = 256
  PORT = 53
  
  def listen(port):
      if port is None:
          port = PORT
  
-     print('Listening for data via DNS.')
+     print('Listening for data via DNS on port {0}.'.format(port))
      l = network.get_listener('UDP', port)
  
      print('Data Received:')
      while 1:
          data, addr = l.recvfrom(1500)
  
          dns = network.parse_dns(data)
          name = str(dns.get_q().get_qname()) 
          dec = network.decode_data(name.rstrip('.'))
          print(dec)
  
  
  def send(server, port, data):
      if port is None:
          port = PORT
  
-     print('Sending data to {0} via DNS.'.format(server))
+     print('Sending data via DNS to {0} on port {1}.'.format(server, port))
  
      print('Data Sent:')
      for n in range(0, len(data), BLOCK_SIZE):
          block = data[n:n + BLOCK_SIZE]
-         print block
+         print(block)
  
          enc = network.encode_data(block)
          network.send_dns_query(server, port, enc)
  
Add port to logging. Fix print statement.
## Code Before:
import network

BLOCK_SIZE = 256
PORT = 53

def listen(port):
    if port is None:
        port = PORT

    print('Listening for data via DNS.')
    l = network.get_listener('UDP', port)

    print('Data Received:')
    while 1:
        data, addr = l.recvfrom(1500)

        dns = network.parse_dns(data)
        name = str(dns.get_q().get_qname()) 
        dec = network.decode_data(name.rstrip('.'))
        print(dec)


def send(server, port, data):
    if port is None:
        port = PORT

    print('Sending data to {0} via DNS.'.format(server))

    print('Data Sent:')
    for n in range(0, len(data), BLOCK_SIZE):
        block = data[n:n + BLOCK_SIZE]
        print block

        enc = network.encode_data(block)
        network.send_dns_query(server, port, enc)

## Instruction:
Add port to logging. Fix print statement.
## Code After:
import network

BLOCK_SIZE = 256
PORT = 53

def listen(port):
    if port is None:
        port = PORT

    print('Listening for data via DNS on port {0}.'.format(port))
    l = network.get_listener('UDP', port)

    print('Data Received:')
    while 1:
        data, addr = l.recvfrom(1500)

        dns = network.parse_dns(data)
        name = str(dns.get_q().get_qname()) 
        dec = network.decode_data(name.rstrip('.'))
        print(dec)


def send(server, port, data):
    if port is None:
        port = PORT

    print('Sending data via DNS to {0} on port {1}.'.format(server, port))

    print('Data Sent:')
    for n in range(0, len(data), BLOCK_SIZE):
        block = data[n:n + BLOCK_SIZE]
        print(block)

        enc = network.encode_data(block)
        network.send_dns_query(server, port, enc)
