Answered: There are 22 stones. How many would you…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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The game of Nim starts with a random number of stones between 15 and 30. Two players alternate turns and on each turn may take either 1, 2, or 3 stones from the pile. The player forced to take the last stone loses. Create a nim application in python that allows the user to play against the computer. In this version of the game, the application generates the number of stones to begin with, the number of stones the computer takes, and the user goes first. The Nim application code should:

prevent the user and the computer from taking an illegal number of stones. For example, neither should be allowed to take three stones when there are only 1 or 2 left.

include an is_valid_entry() function to check user input.

include a draw_stones() function that generates a random number from 1 to 3 for the number of stones the computer draws.

include separate functions to handle the user’s turn and the computer’s turn.

My problem is that the code is not outputting like it's supposed to. I've attached the proper output to this question. If you could fix the output and make it more efficient/improve it that would be awesome! :)

import random

player1 = "player"

player2 = "Computer"

plyrStonesTakes=0

gameover=False

stonesNumber=random.randint(15,30)

def draw_stones(): #generates a random number from 1 to 3 for the number of stones the computer draws

compStonesTakes=random.randint(1,3)

global stonesNumber

while compStonesTakes>stonesNumber:

compStonesTakes=random.randint(1,3)

stonesNumber-=compStonesTakes

return stonesNumber

def removingStonesHuman(): #Calculates the total stones left after the player removes their stones

global stonesNumber

stonesNumber-=plyrStonesTakes

return stonesNumber

def is_valid_entry(): #Check if plyrStonesTakes is legal and diplays respective message

global plyrStonesTakes

legalMove=False

while not legalMove:

plyrStonesTakes=int(input("How many stones would you like? "))

if plyrStonesTakes>3 or plyrStonesTakes<1:

print("Illegal move. Please enter a number between 1 and 3.")

else:

legalMove=True

while plyrStonesTakes>stonesNumber:

print("The number entered is greater than the remaining number of stones.")

plyrStonesTakes=int(input("How many stones would you like?"))

return plyrStonesTakes

def checkWinner(player): #checks if anyone has won the game

if stonesNumber <=0:

print(player," wins.")

global gameover

gameover=True

return gameover

while gameover==False:

print("Computers turn. There are",draw_stones(), "stones.")

checkWinner(player1)

if gameover==True:

break

is_valid_entry()

print("The number of stones left: ",removingStonesHuman())

checkWinner(player2)

There are 22 stones. How many would you like? 3
There are 19 stones. The computer takes 2 stones.
There are 17 stones. How many would you like? 3
There are 14 stones. The computer takes 2 stones.
There are 12 stones. How many would you like? 3
There are 9 stones. The computer takes 3 stones.
There are 6 stones. How many would you like? 3
There are 3 stones. The computer takes 3 stones.
The player beats the computer!

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