Question

Create the Python code for a program that will simulate a basic car radio with 3 presets and 5 stations to

tune in.

You will create methods (class functions) for the following:

__init__ AND __str__

seekNext

longPressPreset1 through 3

shortPressPreset1 through 3

displayLCD

You will create program functions for the following:

main

displayMenuGetOption

Additional notes:

You MUST use the program template.

Your messages and prompts should look EXACTLY like those in the sample. Duplicating all blank

lines and spacing.

You can extrapolate WHAT MUST BE DONE for each method using the attached sample run.

You may use either Public or Private instance variables, but be consistent in your use.

Assume that the radio is in an “ON” state upon instantiation of your radio instance.

The five available stations are: "STATIC", "97.2", "99.6", "101.7", "105.3", "108.5" with the radio’s

initial state having all presets set to “STATIC” and the currently tuned in station as “STATIC”.

Ignore the user selection if a user types in a value that does not exist in the menu.

You do not need to document your variables for this program.

Pay attention to spelling and all other things visual -- you will be graded on this.

Staple multi-page outputs.

Use appropriate white-space and line-continuations in your source code.

Upload ONLY your Python program to Canvas in the designated area

SAMPLE RUN:

Currently Tuned: STATIC

1 = Display tuned in station

2 = Program preset station 1

3 = Program preset station 2

4 = Program preset station 3

5 = Seek next station

6 = Tune preset station 1

7 = Tune preset station 2

8 = Tune preset station 3

9 = Dump Programming

10 = Turn off radio

Enter option: 9

Preset 1: STATIC

Preset 2: STATIC

Preset 3: STATIC

Currently tuned: STATIC

1 = Display tuned in station

2 = Program preset station 1

3 = Program preset station 2

4 = Program preset station 3

5 = Seek next station

6 = Tune preset station 1

7 = Tune preset station 2

8 = Tune preset station 3

9 = Dump Programming

10 = Turn off radio

Enter option: 5

Currently Tuned: 97.2

Preset 1: 99.6

Preset 2: STATIC

Preset 3: 101.7

Currently tuned: 99.6

1 = Display tuned in station

2 = Program preset station 1

3 = Program preset station 2

4 = Program preset station 3

5 = Seek next station

6 = Tune preset station 1

7 = Tune preset station 2

8 = Tune preset station 3

9 = Dump Programming

10 = Turn off radio

Enter option: 10

Run complete. Press the Enter key to exit.

>>>

Answer 1

#-----------------------------------------------------------------------
# CLASS DEFINITIONS

class Radio:
  
    STATIONS = {0:"STATIC", 1:"97.2", 2:"99.6", 3:"101.7", 4:"105.3", 5:"108.5"}

    def __init__(self):
        self.preset1 = 0
        self.preset2 = 0
        self.preset3 = 0
        self.currentlyTuned = 0

    def seekNext(self):
        self.currentlyTuned += 1

    def longPressPreset1(self, key):
        self.preset1 = key

    def longPressPreset2(self, key):
        self.preset2 = key

    def longPressPreset3(self, key):
        self.preset3 = key

    def shortPressPreset1(self, key):
        self.currentlyTuned = key

    def shortPressPreset2(self, key):
        self.currentlyTuned = key

    def shortPressPreset3(self, key):
        self.currentlyTuned = key

    def displayLCD(self):
        try:
            print("Currently tuned:", Radio.STATIONS[self.currentlyTuned])

        except KeyError:
            self.currentlyTuned = 1
            print("Currently tuned:", Radio.STATIONS[self.currentlyTuned])
          
    def __str__(self):
        return "Preset 1: " + Radio.STATIONS[self.preset1] + "\nPreset 2: " \
               + Radio.STATIONS[self.preset2] + "\nPreset 3: " + Radio.STATIONS[self.preset3]
      

#-----------------------------------------------------------------------
# FUNCTION DEFINITIONS

def main():
  
    myRadio = Radio()
    myRadio.displayLCD()
    option = displayMenuGetOption()

    while option != "10":
      
        if option == "1":
            myRadio.displayLCD()
          
        elif option == "2":
            myRadio.longPressPreset1(myRadio.currentlyTuned)
          
        elif option == "3":
            myRadio.longPressPreset2(myRadio.currentlyTuned)
          
        elif option == "4":
            myRadio.longPressPreset3(myRadio.currentlyTuned)
          
        elif option == "5":
            myRadio.seekNext()
          
        elif option == "6":
            myRadio.shortPressPreset1(myRadio.currentlyTuned)
          
        elif option == "7":
            myRadio.shortPressPreset2(myRadio.currentlyTuned)
          
        elif option == "8":
            myRadio.shortPressPreset3(myRadio.currentlyTuned)
          
        elif option == "9":
            print(myRadio)
          
        else:
            myRadio.displayLCD()
            option = displayMenuGetOption()
      
        myRadio.displayLCD()
        option = displayMenuGetOption()
          
    if option == "10":
        input("Run complete. Press the Enter key to exit.")

def displayMenuGetOption():

    print("\n1 = Display tuned in station")
    print("2 = Program preset station 1")
    print("3 = Program preset station 2")
    print("4 = Program preset station 3")
    print("5 = Seek next staion")
    print("6 = Tune preset station 1")
    print("7 = Tune preset station 2")
    print("8 = Tune preset station 3")
    print("9 = Dump programming")
    print("10 = Turn off radio\n")

    selection = input("Enter option: ")
    print("")
    return selection
  
  
#-----------------------------------------------------------------------
# PROGRAM'S MAIN LOGIC
#

main()