old_contents: """Usage: logview [options] <port> 
  
  Options:
  	-h, --help			show this help message
  	-v, --verbose		print status messages
  	--ignore=loglevels	ignore logs of the specified levels
  """
  
  import threading
  import socket
  import logging
  import os
  import colorama
  import docopt
  from termcolor import colored
  from collections import deque
  
  
  markerStack = deque([''])
  
  def colorMessage(message):
      if 'Info' in message :
          print(colored(message, 'green'))
      elif 'Error' in message :
          print(colored(message, 'red'))
      elif 'Fatal' in message :
          print(colored(message, 'red', 'white'))
      else:
          print(message)
  
  def appendMessageToBuffer(message):
      markerStack.append(message)
      if len(markerStack) > MAX_ELEMENTS_IN_QUEUE:
          markerStack.popleft()
  
  def updateView():
      for marker in reversed(markerStack):
          colorMessage(marker)
  
  class UdpListener():
  
      def __init__(self):
          self.sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
          self.sock.bind(('127.0.0.1', 4242))
  
      def listen(self):
          while True:
              msg = self.sock.recv(4096)
              appendMessageToBuffer(msg)
              updateView()
  
      def start_listening(self):
          t = threading.Thread(target=self.listen)
          t.start()
  
  if __name__ == "__main__": 
   	
   	arguments = docopt(__doc__, version='Naval Fate 2.0')
      colorama.init()
      
  
      listener = UdpListener()
      listener.start_listening()
  
new_contents: __doc__="""Usage: logview [options] [<port>]
  
  Options:
  	-h, --help			show this help message
  	-v, --verbose		print status messages
  	--ignore=loglevels	ignore logs of the specified levels
  """
  
  import threading
  import socket
  import logging
  import os
  import colorama
  from docopt import docopt
  from termcolor import colored
  from collections import deque
  
  MAX_ELEMENTS_IN_QUEUE = 5
  markerStack = deque([''])
  
  def colorMessage(message):
      if 'Info' in message :
          print(colored(message, 'green'))
      elif 'Error' in message :
          print(colored(message, 'red'))
      elif 'Fatal' in message :
          print(colored(message, 'red', 'white'))
      else:
          print(message)
  
  def appendMessageToBuffer(message):
      markerStack.append(message)
      if len(markerStack) > MAX_ELEMENTS_IN_QUEUE:
          markerStack.popleft()
  
  def updateView():
      for marker in reversed(markerStack):
          colorMessage(marker)
  
  class UdpListener():
  
      def __init__(self):
          self.sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
          self.sock.bind(('127.0.0.1', 4242))
  
      def listen(self):
          while True:
              msg = self.sock.recv(4096)
              appendMessageToBuffer(msg)
              updateView()
  
      def start_listening(self):
          t = threading.Thread(target=self.listen)
          t.start()
  
  if __name__ == "__main__": 
  
      arguments = docopt(__doc__, version='LogView 0.0.1')
      colorama.init()
      
  
      listener = UdpListener()
      listener.start_listening()
  
subject: fix docopt call error