import sys
import time
import string
import socket
import random
import argparse
# port number for connection
PORT_NUMBER = 1235

# this boolean value indicates if the student should "think" (wait up to a minute) before sending the answer
g_enable_thinking_time = False
# if the student is a robot, we randomly generate a name for it and it answers the questions randomly
g_is_robot = False

if __name__ == '__main__':

if len(sys.argv) > 1:
   g_is_robot = '-r' in sys.argv or '--robot' in sys.argv

if not g_is_robot:
   # first we ask the client (i.e. the student) for his/her name
   username = input("Please insert your username")
   # display a greeting message
   print("Welcome ", username, "! Are you ready for the quiz?\nConnecting to the server! Please wait...")
else:
   num_letters_in_name = 6
   # randomly generate a name for our robot
   username = ''.join(random.choices(string.ascii_uppercase + string.digits, k=num_letters_in_name))

try:
   # create a socket connection on the same machine (localhost), on the specified port number
   s = socket.create_connection(('localhost', PORT_NUMBER))
except socket.error as msg:
   # handle any socket error that might occur.
   # print an error message to the user and stop (exit) the application with error code -1
   print("Error while establishing a connection with the server: ", msg.strerror)
   exit(-2)

# send the username to the server
s.sendall(bytes(username, 'utf8'))

# I designed the program such that the server sends a welcome message to each student
# wait to receive this input message from the sever
welcome_message = s.recv(1024)

if not g_is_robot:
   # print the message received from the server (only if the student is not a robot)
   print(welcome_message.decode('ascii'))

# I designed the quiz in the following way: the server can send any number of questions to the user
# (the number of questions is controlled by a variable in server.py)
# and, after the server sends its last questions, it will send 'end' to notify the student that the quiz is over

# this while loop is used to read all the questions from the server

Tic-Tac-Toe Randomly Tic-Tac-Toe is a very simple game involving a...