Chapter 10, Problem 3PE

Program Plan Intro

Three Button Monte

Program Plan:

• Import the required packages.
• Declare a main function. Inside the main function,
  • Create the application window.
  • Draw the interface widget by creating three buttons.
  • Assign the text to the interface.
  • Call the method “draw()”.
  • Get the random number.
  • Assign the values to “false”.
  • Check the condition.
    • Assign “point1” to “true”.
  • Check the condition.
    • Assign the “point2” to “true”.
  • Otherwise, Assign the “point3” to “true”
  • Activate all the three doors.
  • Get the action mouse clicked.
  • Check the condition using “while” loop.
    • Check the condition for selecting the door 1 to be clicked.
    • Check the condition for selecting the door 2 to be clicked.
    • Check the condition for selecting the door 3 to be clicked.
  • Call the “getMouse()” function
• Call the main function.

Explanation of Solution

Program:

Refer the program “button.py” given in the “Chapter 10” from the text book. Add the method “update()” along with the given code.

#Define the method update

    def update(self, win, label):

        #Call the method undraw()

        self.label.undraw()

        #Assign the position to centre

        center = self.center

        #Assign the label

        self.label = Text(center, label)

        #Set active to false

        self.active = False

        #Call the method draw()

        self.label.draw(win)

Main.py:

#Import the required packages

from button import Button

from graphics import GraphWin, Point, Text

from random import random

#Definition of main method

def main():

   #Creating the application window by setting title, cords and background

    win = GraphWin("Three Button Monte", 500, 300)

    win.setCoords(-12, -12, 12, 12)

    win.setBackground("green3")

    #Draw the interface widget by creating three button

    door1 = Button(win, Point(-7.5, -3), 5, 6, "Door 1")

    door2 = Button(win, Point(0, -3), 5, 6, "Door 2")

    door3 = Button(win, Point(7.5, -3), 5, 6, "Door 3")

    #Assign the text to the interface

    direction = Text(Point(0, 10), "Pick a Door")

    #Call the method draw

    direction.draw(win)

    #Get the random number

    x = random() * 3

    #Assign the values to false

    point1 = point2 = point3 = False

    #check the condition

    if 0 <= x <1:

        #Assign point1 to True

        point1 = True

        #Chcek the condition

    elif 1 <= x < 2:

        #Assign the point2 to True

        point2 = True

        #Otherwise

    else:

        #Assign the point3 to True

        point3 = True

    #Activate all the three doors

    door1.activate()

    door2.activate()

    door3.activate()

    #Get the action mouse click

    click = win.getMouse()

#Check the condition using "while" loop

    while door1.clicked(click) or door2.clicked(click) or door3.clicked(click):

    #If door1 is clicked

        if door1.clicked(click):

            #Assign point1 to true

            if point1 == True:

                #Update the interface

                door1.update(win,"Victory!")

            else:

                 #If door1 is clicked

                if door2.clicked(click):

                     #Update the interface

                    door2.update(win,"Correct Door.")

                    #Get the action mouse click

                    click = win.getMouse()

                else:

                       #Update the interface

                    door3.update(win,"Correct door.")

                     #Get the action mouse click

                    click = win.getMouse()

             #If door2 is clicked        

        elif door2.clicked(click):

              #Assign point2 to true

            if point2 == True:

                  #Update the interface 

                door2.update(win,"Victory!")

            else:

                    #If door2 is clicked   

                if door3.clicked(click):

                    #Update the interface

                    door3.update(win,"Correct Door.")

                      #Get the action mouse click

                    click = win.getMouse()

                else:

                    #Update the interface 

                    door1.update(win,"Correct door.")

                      #Get the action mouse click

                    click = win.getMouse()

        else:

            #Assign point3 to true

            if point3 == True:

                 #Update the interface 

                door3.update(win,"Victory!")

            else:

                 #If door2 is clicked   

                if door2.clicked(click):

                    #Update the interface 

                    door2.update(win,"Correct Door.")

                    #Get the action mouse click

                    click = win.getMouse()

                else:

                     #Update the interface 

                    door1.update(win,"Correct door.")

            #Get the action mouse click

                    click = win.getMouse()

 #Call the getMouse()

    win.getMouse()

  #Call the main function 

main()

Sample Output

Output:

Screenshot of output

Screenshot of output