Question

In this lab you will convert lab5.py to use object oriented programming techniques. The createList and checkList functions in lab5.py become methods of the MagicList class, and the main function of lab6.py calls methods of the MagicList class to let the user play the guessing game.

                            

A. (4pts) Use IDLE to create a lab6.py. Change the 2 comment lines at the top of lab6.py file:

• First line: your full name
• Second line: a short description of what the program does

B. (243 pts total) Write a Python program that plays a guess-the-number game with magic lists.

The program will play as many games as the user wants. In each game, the program asks the user to think of a number between 1 and 31, inclusive. Then the program presents the user with 5 lists of numbers and asks the user if their number is in the list. Based on the user's answers of 'y' or 'n', the program guesses the user's number.

• The program works with 5 files, each file contains 16 integers, one number per line.

The filenames are: magicList1.txt, magicList2.txt, magicList3.txt, magicList4.txt, and magicList5.txt
This is the same as lab5.py.

• The program is divided into a NumberGuesser class and a main function. (3pts)
  It might be helpful to open lab5.py since you'll be using some of the same code in lab5.py for lab6.py.

• The NumberGuesser class

         Create a class named NumberGuesser. (5pts)
       The class has 3 methods: (5pts)

• Convert lab5's createList function into the constructor of the NumberGuesser class. (15pts)
  The constructor does the following tasks:
  • Loop 5 times to:      (5pts)
    • Open one magcListN.txt file each time through the loop.    (10pts)
    • Read the 16 numbers from the file into a list. This is the same as in lab5.py.   (15pts)
    • Store the list into an instance attribute named magicLists, which is also a list.   (15pts)

By the time the constructor is finished, there should be a magicLists instance attribute which contains 5 magic lists.

• Write a new printAList method that does the following tasks: (5pts)
  • Receive a magic list as input argument   (10pts)
  • Have a nested loop to print the numbers in the list as 4 rows by 4 columns. This is the same as in lab5.py.     (15pts)

• Convert the lab5's checkList function into a checkList method. (5 pts)

The method does the following tasks:

• Loop 5 times to:     (5pts)
  • Call the printAList method to print one magic list at a time    (10pts)
  • Loop to keep asking the user whether their number is in the list, until you get a 'y' or 'n' answer        (15pts)
  • If the answer is 'y', add the value corresponding to the current magic list to the total. (30pts)
    You'll need to figure out how to tell the computer what the corresponding value is.
    Example: 16 is the corresponding value for magic list 1, 8 is the corresponding value for magic list 2, etc.
    5 pts extra credit: if you can figure out how to add the corresponding value without using an if statement.
  • The checkList method returns the total.    (5pts)

• The main function
         Write the main function, which is not part of the NumberGuesser class. (5 pts)
         The main function will:

• Create an instance (an object) of the NumberGuesser class.    (15pts)
• Loop as long as the user wants to play. You decide how the user indicates that they want to play again, such as answer 'y' or 'n', or any 2 choices that make sense.(15pts).
  Inside the loop:
  • Call the checkList method to get the total.    (15 pts)
  • If the total is non-zero, then print the user's number
    If the total is 0, then print an error message       (10pts)
• Don't forget to call the main function so that the program will run.       (10pts)

C. (10 pts) Test your output by running several games, one after another.
The sample output will be the same as with lab5.py

Text files:

magicList1.txt

16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31

magicList2.txt

8
9
10
11
12
13
14
15
24
25
26
27
28
29
30
31

magicList3.txt

4
5
6
7
12
13
14
15
20
21
22
23
28
29
30
31

magicList4.txt

2
3
6
7
10
11
14
15
18
19
22
23
26
27
30
31

magicList5.txt

1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31

lab5.py

def createList(n):

    filename = 'magicList'+str(n)+'.txt'
    magic_numbers=[]
    with open(filename,'r') as infile:
        for number in infile.readlines():
            if number.strip() is not '':
                magic_numbers.append(int(number.strip()))
    return magic_numbers

def is_number_exist(magic_list):

    for i in range(len(magic_list)):
        print('{0:>3}'.format(magic_list[i]),end='')
        if (i+1)%4==0:
            print()

    present=input('Is your number in the list above? y/n: ')
    return present


def main():

    while True:
        secret_number=0
        for i in range(5):
            magic_numbers = createList(i+1)
            present=is_number_exist(magic_numbers)
            if present=='y' or present=='Y':
                secret_number+=2**i
        print('Your number is {}'.format(secret_number))
      play_again=input('Do you want to play again y/n: ')
        if play_again=='n' or play_again=='N':break
    print('Thanks. Good Bye!')

main()

Sample Output:

16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 Is your number in the list above? y/n: n 8 9 10 11 12 13 14 15 24 25 26 27 28 29 30 31 Is your number in the list above? y/n: y 4 5 6 7 12 13 14 15 20 21 22 23 28 29 30 31 Is your number in the list above? y/n: n 2 367 10 11 14 15 18 19 22 23 26 27 30 31 Is your number in the list above? y/n: n 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 Is your number in the list above? y/n: y Your number is 9

Answer 1

Note: Please save the 5 input text files and source code python file in the same folder. Otherwise it raises errors.

Program Screenshots:

#Name: XXXXXX #Number Guessing game beween computer to #person. #create class NumberGuesser class NumberGuesser(): def init__(self): #create list self.magicLists=[] #use for loop to to repeat 5times for i in range (5): #get the filename filename = 'magicList'+str((i+1))+'.txt' #create list magic_numbers=[] #open the file with open (filename, 'r') as infile: #get the numbers from the file #and append into list for number in infile.readlines(): if number.strip() is not '': magic_numbers.append(int (number.strip())) self.magiclists.append(magic numbers) #implement printAList def printAList (self, magic_list): #use for-loop to get the list for i in range (len (magic_list)): #print the list in the console #in a format print("{0:>3}'.format (magic_list[i]), end='') if (i+1) %4==0: print () #implement checklist method def checklist (self): #intialize the number secret number=0 #declare and initialize number multiply=4 #use for-loop #to compute secret number for i in range (5): self.printAList (self.magicLists[i]) #repeat the prompting present=input('Is your number in the list above? y/n:') if present=='y' or present=='Y': secret_number+=2**multiply multiply-=1 #return the number return secret_number

#define the main method def main(): #create object for the class game=NumberGuesser() #repeat the loop while True: #call the method through the object total=game.checkList () #if the total value is 0 if (total==0): #print the message print("Error! You guesed the number wrong.") #Otherwise print the guessing number else: #print the number print ('Your number is {}'. format (total)) #again prompt for the number play_again=input('Do you want to play again y/n:') #if the user input is n or N if play_again=='n' or play again=='N': #break break #print the message print('Thanks. Good Bye!') #call the main method main()

Sample Input text files:

magicList1 - Notepad File Edit Format View Help 16 17 20 magicList2 - Notepad File Edit Format View Help magicList3 - Notepad 9 10 File Edit Format View Help 11 4 magicList4 - Notepad 12 5 File Edit Format View Help 14 7 2 ridict5 - Notepad magicList5 - Notepad File Edit Format View Help

Sample Output:

16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 Is your number in the list above? y/n: n 8 9 10 11 12 13 14 15 24 25 26 27 28 29 30 31 Is your number in the list above? y/n: y 4 5 6 7 12 13 14 15 20 21 22 23 28 29 30 31 Is your number in the list above? y/n: Y 2 3 6 7 10 11 14 15 18 19 22 23 26 27 30 31 Is your number in the list above? y/n: y 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 Is your number in the list above? y/n: y Your number is 15

Do you want to play again y/n: y 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 Is your number in the list above? y/n: y 8 9 10 11 12 13 14 15 24 25 26 27 28 29 30 31 Is your number in the list above? y/n: n 4 5 6 7 12 13 14 15 20 21 22 23 28 29 30 31 Is your number in the list above? y/n: y 2 3 6 7 10 11 14 15 18 19 22 23 26 27 30 31 Is your number in the list above? y/n: n 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 Is your number in the list above? y/n: y Your number is 21 Do you want to play again y/n: n Thanks. Good Bye!

Code to be Copied:

#Name: XXXXXX
#Number Guessing game beween computer to
#person.
#create class NumberGuesser
class NumberGuesser():
    def __init__(self):
        #create list
        self.magicLists=[]
        #use for loop to to repeat 5times
        for i in range(5):
            #get the filename
            filename = 'magicList'+str((i+1))+'.txt'
            #create list
            magic_numbers=[]
            #open the file
            with open(filename,'r') as infile:
                #get the numbers from the file
                #and append into list
                for number in infile.readlines():
                    if number.strip() is not '':
                        magic_numbers.append(int(number.strip()))
            self.magicLists.append(magic_numbers)
    #implement printAList
    def printAList(self,magic_list):
        #use for-loop to get the list
        for i in range(len(magic_list)):
            #print the list in the console
            #in a format
            print('{0:>3}'.format(magic_list[i]),end='')
            if (i+1)%4==0:
                print()
    #implement checkList method
    def checkList(self):
        #intialize the number
        secret_number=0
        #declare and initialize number
        multiply=4
        #use for-loop
        #to compute secret number
        for i in range(5):
            self.printAList(self.magicLists[i])
            #repeat the prompting
            present=input('Is your number in the list above? y/n: ')
            if present=='y' or present=='Y':
                secret_number+=2**multiply
            multiply-=1
        #return the number
        return secret_number

#define the main method
def main():
    #create object for the class
    game=NumberGuesser()
    #repeat the loop
    while True:
        #call the method through the object
        total=game.checkList()
        #if the total value is 0
        if(total==0):
            #print the message
            print("Error! You guesed the number wrong.")
        #Otherwise print the guessing number
        else:
            #print the number
            print('Your number is {}'.format(total))
            #again prompt for the number
            play_again=input('Do you want to play again y/n: ')
            #if the user input is n or N
            if play_again=='n' or play_again=='N':
                #break
                break
    #print the message
    print('Thanks. Good Bye!')
#call the main method
main()