CP1401 SP53 2019 Assignment 2
Implement the Tropical Airlines program
Task
You are to implement code in Python a plane ticket ordering program as described in the following description. Use what you have learned in class, including simple functions, selection, repetition and lists. You should use any feedback that you received from Assignment 1 to improve your program flow.
See the last section of this document for sample output showing how the program should run.
See the last section of this document for sample output showing how the program should run.
Program Features:
Short description:The program will begin by asking the user for their name, welcoming them and then displaying a menu with three choices, as shown below. Choosing Instructions or Order will make the program perform the actions described below. If the user chooses to Exit the program will display the costs of each order they have made using the program, and then a farewell message as described below. Any invalid value will produce an error message. After every menu selection other than Exit the menu will be displayed again.
The Instructions option will display a short paragraph explaining the program, as shown below. The Order option will take the user through a series of choices to order a single ticket. Once the choices are made the program will display a summary of the users choices and a final total for the ticket. After either of these options, the menu will be displayed again. When the user chooses Exit, a listing of the totals from the previous orders should be displayed with the output message Your orders are:, followed by the previous order totals in ascending order smallest to largest and a final total of all the orders combined. Then the message Thank you for visiting Tropical Airlines will be displayed.
See next page for Detailed Instructions.
Detailed instructions:
Ask for the users name and welcome them to the ordering system, using their name
Show the program menu:
I nformationOrder ticketE xitIf the user chooses I display the following text:
Thank you for choosing Tropical Airlines for your air travel needs. You will be asked questions regarding what type of ticket you would like to purchase as well as destination information. We also offer 50 discounted fares for children.
If the user chooses O then the program will begin the process of ordering a ticket, as described below.
ALL other choices will produce an error. The menu will be displayed after every menu choice, except E
Once the O option has been entered, the program welcomes the user and asks if the ticket is for the user or for another person. If it is for another person, get the travellers name to display at the end, otherwise use the users name. For the following instructions you will need to keep track of the values and make all needed calculations at the end.
For this assignment you MUST ask the users for the following pieces of information in the order given, and you MUST allow for the specific inputs shown. Real world clients will often have the final say over the user interface, so this is a common restriction.
Ask if ticket will be one way or return round trip
Ask for the destination choices are Cairns, Sydney or Perth.
Ask for the type of fare Business, Economy or Frugal
Ask what type of seat Window, Aisle or Middle
Ask age of person in order to check for child fare
Show user or traveller name, choices and total
If user chooses E, the program should exit with the message: username, your orders are: with a list of the ticket costs in ascending numerical order, then the message Your final total is: with the combined total and then the message Thank you for visiting Tropical Airlines.
Example:username, your orders are: 250, 300 and 550. Your final total is: 1100. Thank you for visiting Tropical Airlines. You also must handle the situation where only one order is placed username, your order is: 250. Your final total is: 250. Thank you for visiting Tropical Airlines.
Implementation:
Python file:You are to divide your solution into functions, following the principles shown in class. These may involve one for each menu option other than Exit as well as functions for parts of the program e.g. a calculating the total ticket price could be implemented as a function. For each function you are to provide an IPO chart listing all variables which are needed for your solution. In cases where selections are necessary you must include a suitable condition action table directly below the IPO chart. Follow the sample solution provided in Assignment One as a guide.
Planning document:
You also need to provide an updated version of your previous planning document showing an algorithm in pseudocode for each function, being sure to clearly indicate input and output variables for each. This should be based on your submission for Assignment One, with appropriate changes being made for new functionality.
You may show your assignment to your tutor during practical time to get comments or suggestions. It is important to note that you can only get help from staff in practical time after your prac work is finished.
General Principles:
In this assignment, you will be focusing on basic planning and implementation using selections, repetition, and functions. Lists may be used where they are feasible.
Use the techniques and patterns that you have learned and seen demonstrated in class.
You are allowed to use the code that Flowgorithm generates as a base for your project, although you will need to make additions to it:
Flowgorithm does not create a main function, so you must do this at either the top or the bottom of your code
Flowgorithm generated code does not always follow the best practices we have shown in lectures and pracs. Ensure that you do.
Coding standards:
Variables:
Wherever possible, variables should be set at the top of the function
Although Python does not use constants you may set variables to values that will remain the same for the life of the program. These should be named in all caps
You should be able to modify these variables to adjust the various costs of items such as oneway fare, return, discount for child tickets, etc. This is one of the most important aspects of this assignment, so consider carefully how to use constants. Remember to use these variables everywhere you can.
You will need to decide the best position to place these variables.
You should AVOID the use of global variables unless they are needed in multiple places in the application
In other words, you should pass the values to any functions that need them
And any constants only needed in one function should be ONLY in that function
Variables should be named appropriately using either camelCase or underscores
No variables should be a single character such as x or y unless they are used in a loop as an index. Variable names should be meaningful, and describe their use andor purpose
Any list variable should be named with plurals to show multiple data is held e.g. prices versus price
Comments:
You will need to add at LEAST one comment for each function that you define including main
The comment should either be placed directly above or below the function header
The comment should describe: a the purpose of the function, b any inputs and c any returned values
Additional comments should be placed at any position where the functionality of the program may be unclear
All code MUST BE properly indented
Error handling:
Note that menu choice and other character selection should handle upper and lower case letters.
Look into the toUpper or toLower functions in Python
You also must make sure that any functions that get input from the user do error checking to ensure that the input is within the expected range greater than zero, etc.
Output
Make your output display as close as possible to the given examples, especially formatting and layout. Use Google to find out how to display tabs and other special characters using Python 3.
Hints:
You may find a list variable useful for holding order costs
Youll need the cost of all orders to be stored in main, for display when the user quits. This may need to be returned from a function.
Try to use predefined Python functions wherever possible such as sort, total, len
Submission:
Hand in a zip file named like: FirstnameLastname containing the following:
Python file .py
Planning document in Microsoft Word format .docx
Submit your zip file by uploading it on LearnJCU under Assessment.
Due:
Submit your assignment by the date and time specified on LearnJCU.
Submissions received after this date will incur late penalties as described in the subject outline.
Integrity:
The work you submit for this assignment must be your own. You are allowed to discuss the assignment with other students and get assistance from your peers, but you may not do anyone elses work for them and you may not get anyone else to do any part of your work. Programs that are detected to be too similar to another students work will be dealt with promptly according to University procedures for handling plagiarism.
If you require assistance with the assignment, please ask general questions on the itatjcu.slack.com web site, or get specific assistance with your own work by talking with your lecturer or tutor.
Marking Scheme:
Criteria
Unacceptable 0
Limited 40
Basic 60
Sound 80
Excellent 100
Planning documents show appropriate use of problemsolving tools including algorithm, IPO charts and conditionaction tables to communicate the planned solution. 10
No use of any problem solving tools
The algorithm provided does not solve the problem, or is not based on other parts of the planning documentation.
The algorithm provided mostly solves the problem, and is based on other parts of the planning documentation; however there are more than 5 significant mistakes.
The algorithm provided solves the problem, and is based on other parts of the planning documentation; however there are more than 3, but no more than 5 significant mistakes.
The algorithm provided solves the problem, and is based on other parts of the planning documentation. There are no more than 3 significant mistakes.
Effective and correct use of variables includes appropriate naming of variables20
Variables are inappropriately named and used
Variables are sometimes appropriately used, but their naming is unclear
The variables identifies are mostly appropriate and correctly used, but there are more than 5 significant errors
The variables identified are mostly appropriate and correctly used, but there are more than 3, but no more than 5 significant errors
The variables identified are appropriate and correctly used. There are no more than 3 significant errors.
Effective and correct use of functions 20
No functions are identified
The functions identified are mostly inappropriate or incorrectly used
The functions identified are mostly appropriate and correctly used, but there are more than 5 significant errors
The functions identified are mostly appropriate and correctly used, but there are more than 3, but no more than 5 significant errors
The functions identified are appropriate and correctly used. There are no more than 3 significant errors
Effective and correct use of conditionals if statements 20
No conditions are identified
The conditionals identified are mostly inappropriate or incorrectly used
The conditionals identified are mostly appropriate and correctly used, but there are more than 5 significant errors
The conditional identified are mostly appropriate and correctly used, but there are more than 3 but no more than 5 significant errors
The conditionals identified are appropriate and correctly used. There are no more than 3 significant errors.
Effective and correct use of loops 20
No loops are identified
The loops identified are mostly inappropriate or incorrectly used
The loops identified are mostly appropriate and correctly used, but there are more than 5 significant errors
The loops identified are mostly appropriate and correctly used, but there are more than 3 but no more than 5 significant errors
The loops identified are appropriate and correctly used. There are no more than 3 significant errors.
Effective and correct use of comments 10
No comments are listed
Comments are mostly inappropriate or incorrectly used
Comments are generally placed appropriately, but there are more than 5 significant errors
The comments are generally placed appropriately but there are more than 3, but no more than 5 significant errors
The comments are appropriate and correctly used. There are no more than 3 significant errors.
Example of program interaction and output. Program output is in Bold. User input is in Red
What is your name? Bob
Welcome Bob.
Tropical Airlines Ticket Ordering System
Instructions
Order ticket
Exit
U
Invalid menu choice.
Tropical Airlines Ticket Ordering System
Instructions
Order ticket
Exit
I
Thank you for choosing Tropical Airlines for your air travel needs. You will be asked questions regarding what type of ticket you would like to purchase as well as destination information. We also offer 50 discounted fares for children.
Tropical Airlines Ticket Ordering System
Instructions
Order ticket
Exit
O
Bob, is this ticket for:
You
Someone else
S
Please enter the name of the person travelling
Darth Vader
Is this a return trip R or OneWay O
R
Please select the destination for your return trip. Fare prices are listed below.
Cairns 400
Sydney 575
Perth 700
S
Please choose the type of fare. Fees are displayed below and are in addition to the basic fare. Please note choosing Frugal fare means you will not be offered a seat choice.
Business 275
Economy 25
Frugal 0
E
Please choose the seat type. Choosing the middle seat will deduct 25 from the total fare.
Window 75
Aisle 50
Middle 25
W
How old is the person travelling? Travellers under 16 years old will receive a 50 discount for the child fare.
22
Calculating fare . . .
Ticket for: Darth Vader
Sydney return 575
Economy 25
Window 75
Age 22 not eligible for child ticket
Total price: 675
Tropical Airlines Ticket Ordering System
Instructions
Order ticket
Exit
O
Bob, is this ticket for:
You
Someone else
Y
Is this a return trip R or OneWay O
O
Please select the destination for your return trip. Fare prices are listed below.
Cairns 250
Sydney 420
Perth 510
P
Please choose the type of fare. Fees are displayed below and are in addition to the basic fare. Please note choosing Frugal fare means you will not be offered a seat choice.
Business 275
Economy 25
Frugal 0
F
How old is the person travelling. Travellers under 16 years old will receive a 50 discount for the child fare.
12
Calculating fare . . .
Ticket for: Bob
Perth oneway 575
Frugal 0
Window 0
Age 12 eligible for child ticket, 50 discount applied
Total price: 287.50
Tropical Airlines Ticket Ordering System
Instructions
Order ticket
Exit
E
Bob, your orders are: 287.50 and 675. Your final total is: 962.50. Thank you for visiting Tropical Airlines.