CODE:Python class PriceChecker():     # Constructor      def __init__(self):         self.levelsList = []     # Properties      # A property is defined like a method, but you use it in your      # code like a variable (no parentheses need to followed it when used in your code)         @property     def levelsList(self):         return self.__levelsList     @levelsList.setter     def levelsList(self, newValue):         self.__levelsList = newValue         # Class Methods     # =============     # Method: Sort and Display the levelsList     def displayList(self):         print(chr(27) + "[2J") # Clear the screen         print("Price Levels In The List")         print("========================")         # Sort the list in reverse order         ...         # Print the items in the list (Based on the above sort, numbers should appear from large to small.)         ...     # Display the menu and get user input about what methods to execute next     def displayMenu(self):         min = 0         max = 3         errorMsg = "Please enter a valid option between " + str(min) + " and " + str(max)         print("MENU OPTIONS")         print("============")         print("1. Add a price level")         print("2. Remove a price level")         print("3. Remove all price levels")         print("0. Exit the program")         print(" ")                     # Get user input. Keep on requesting input until the user enters a valid number between min and max          selection = 99         while selection < min or selection > max:             try:                 selection = int(input("Please enter one of the options: "))             except:                 print(errorMsg) # user did not enter a number                 continue # skip the following if statement             if(selection < min or selection > max):                 print(errorMsg) # user entered a number outside the required range         return selection # When this return is finally reached, selection will have a value between (and including) min and max     # Method: Append a new price level to the levelsList     def addLevel(self):         try:             # Let the user enter a new float value and append it to the list             ...         except:             # Print and error message if the user entered invalid input             ...     # Method: Remove an existing price level from the levelsList     def removeLevel(self):         try:             # Let the user enter a new float value. If found in the list, remove it from the list             ...         except:             # Print and error message if the user entered invalid input             ...     # Method: Set levelsList to an empty list     def removeAllLevels(self):         # Set levelsList to an empty list         ...   #                                           Main Code Section # ************************************************************************************************* # Create an object based on the PriceChecker class checkerObj = PriceChecker() # Display the levelsList and Menu; and then get user input for what actions to take userInput = 99 while userInput != 0:     checkerObj.displayList()     userInput = checkerObj.displayMenu()     if(userInput == 1):         checkerObj.addLevel()     elif(userInput == 2):         checkerObj.removeLevel()     elif(userInput == 3):         checkerObj.removeAllLevels() create an app that keeps an eye on the Bitcoin price - via the BitMex exchange. The app must also sound an alarm if the price moves above or below any of the user-entered price levels. Instructions 1.Complete all code sections that are marked with ellipsis (…). Base your code on the functionality of the particular method and the comments added above the ellipsis. The methods in question are displayList(), addLevel(), removeLevel() and removeAllLevels().   Test your code thoroughly. All options on the provided Menu must function correctly

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CODE:Python

class PriceChecker():
    # Constructor 
    def __init__(self):
        self.levelsList = []

    # Properties 
    # A property is defined like a method, but you use it in your 
    # code like a variable (no parentheses need to followed it when used in your code)
   
    @property
    def levelsList(self):
        return self.__levelsList
    @levelsList.setter
    def levelsList(self, newValue):
        self.__levelsList = newValue    

    # Class Methods
    # =============

    # Method: Sort and Display the levelsList
    def displayList(self):
        print(chr(27) + "[2J") # Clear the screen
        print("Price Levels In The List")
        print("========================")
        # Sort the list in reverse order
        ...
        # Print the items in the list (Based on the above sort, numbers should appear from large to small.)
        ...

    # Display the menu and get user input about what methods to execute next
    def displayMenu(self):
        min = 0
        max = 3
        errorMsg = "Please enter a valid option between " + str(min) + " and " + str(max)

        print("MENU OPTIONS")
        print("============")
        print("1. Add a price level")
        print("2. Remove a price level")
        print("3. Remove all price levels")
        print("0. Exit the program")
        print(" ")   
        
        # Get user input. Keep on requesting input until the user enters a valid number between min and max 
        selection = 99
        while selection < min or selection > max:
            try:
                selection = int(input("Please enter one of the options: "))
            except:
                print(errorMsg) # user did not enter a number
                continue # skip the following if statement
            if(selection < min or selection > max):
                print(errorMsg) # user entered a number outside the required range
        return selection # When this return is finally reached, selection will have a value between (and including) min and max

    # Method: Append a new price level to the levelsList
    def addLevel(self):
        try:
            # Let the user enter a new float value and append it to the list
            ...
        except:
            # Print and error message if the user entered invalid input
            ...

    # Method: Remove an existing price level from the levelsList
    def removeLevel(self):
        try:
            # Let the user enter a new float value. If found in the list, remove it from the list
            ...
        except:
            # Print and error message if the user entered invalid input
            ...

    # Method: Set levelsList to an empty list
    def removeAllLevels(self):
        # Set levelsList to an empty list
        ...

 
#                                           Main Code Section
# *************************************************************************************************

# Create an object based on the PriceChecker class
checkerObj = PriceChecker()

# Display the levelsList and Menu; and then get user input for what actions to take
userInput = 99
while userInput != 0:
    checkerObj.displayList()
    userInput = checkerObj.displayMenu()
    if(userInput == 1):
        checkerObj.addLevel()
    elif(userInput == 2):
        checkerObj.removeLevel()
    elif(userInput == 3):
        checkerObj.removeAllLevels()

create an app that keeps an eye on the Bitcoin price - via the BitMex exchange.

The app must also sound an alarm if the price moves above or below any of the user-entered price levels.

Instructions

1.Complete all code sections that are marked with ellipsis (…). Base your code on the functionality of the particular method and the comments added above the ellipsis. The methods in question are displayList(), addLevel(), removeLevel() and removeAllLevels().

  •  

Test your code thoroughly. All options on the provided Menu must function correctly

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