CSCI160 Computer Science I  Program 12 -Solved

Write a program to ask for a series of menu items and prices. Ask for the menu items 
until the user enters a blank value. For every valid menu item ask for a price. The prices 
may be floating point values. Fill a dictionary with this data. Once the user has finished 
entering data ask for a file name. You may use input or FileUtils to ask for the file 
name. Write out each menu item/price pair in the dictionary to the data file, one pair per 
line. Separate the menu item and price with a tab (“\t”). 
Part 2 
Write a program that asks the user for a data file and then displays some information 
about the data. 
First ask the user for the name of the text file. You may use input or FileUtils to ask 
for the file name. Fill a dictionary with the values from the data file using 
readMenuItems(). 
Next, after the dictionary has been filled, you will need to write a variety of functions that 
will work with the menu items and their prices. The function header for each function 
must be implemented exactly as specified. 
Finally, write a main() function that tests each of your functions. 
Do not use a global variable to store the dictionary. This will be an automatic 50% 
deduction before any other grading. 
Display: 
• The total number of menu items 
• A list of menu items 
• All menu items with a price within a certain range 
• Take an order 
• Add menu item 
• Update menu item 
• Access a menu items price 
• The average of all prices 
• Print menuRequired Functions 
def readMenuItems (fileName) – Creates a dictionary in the function and fills the 
dictionary with the menu items/prices from the fileName file. Then it returns the 
dictionary. No error checking is required. 
def totalMenuItems (theDictionary) – Returns the number of menu items in the 
dictionary. 
def getMenuItems (theDictionary) – Returns a list of the menu items. The list 
should be sorted by the menu items. The list should be created in the function. 
def getMenuItemsWithinRange (theDictionary, lowerLimit, upperLimit) – 
Returns the menu items whose price falls inclusively within the range specified by 
lowerLimit and upperLimit. The list must be created in the function. 
def addMenuItem (theDictionary, item, price) – If item does not currently exist 
in the dictionary add it, with its price, to the dictionary and return True. If item does 
currently exist in the dictionary do nothing to the dictionary, and return False. 
def updateMenuItem (theDictionary, item, price) – If item does exist in the 
dictionary update its price and return True. If item does not currently exist in the 
dictionary do nothing to the dictionary, and return False. 
def getMenuItemPrice (theDictionary, item) – If item does exist in the 
dictionary return its price. If item does not currently exist in the dictionary return None. 
def avergePrice (theDictionary) – Returns the average of all menu items in the 
dictionary. Use round() to ensure that the average price has exactly 2 places after the 
decimal point. 
def takeOrder (theDictionary) – This function will ask for menu items until the user 
enters a blank value. For each menu item, ask for the quantity for that item. Calculate 
the cost of the overall order. You do not need to store each item in the order, just 
calculate the total cost. This function will require input and output. This function should 
not return the total cost of the order. 
def printMenu (theDictionary) – This function WILL write to the display a table of 
each menu item and its price. Include column headers in the output. Make sure the price 
has two places after the decimal point. Also make sure the columns are neatly aligned, 
with the menu item column being left justified and the price column being right justified. 
This function should not return a value. 
Questions? 
Ask, sooner is better than later.