Write your answers for the early non-coding questions in a simple text file called questions.txt.
Your learning in this subject is not just about code, but about yourself and your process: how you learn and what
you need to do to succeed.
Take some time right now to reflect and think about your work, how you overcame problems and particularly your
process for learning in this subject so far...
When you reflect, consider what you have learned through experience, not just things that are clear in the teaching.
Reflections must be personal. Be honest.
Answer the following questions to describe some lessons you have learned about yourself and your learning in this subject up to now.
- What do you do that leads to your best learning in this subject?
- How are you going with getting the most out of the teaching in this subject (lecture videos, seminars, etc.) in order to have the best learning experience?
- What percentage of the lecture videos have you watched?
- How much "time on task" (focused learning time) are you devoting to this subject outside the contact hours each week?
- What is one thing that you will change to more consistently do your best learning?
How do you get better at programming?
Write more (good) programs!
And watch/read/study more examples of good programs and programming.
That's what this checkpoint is all about.
Please note that you already have plenty of practice questions in the first 4 practicals. Do these!
Solutions for these checkpoint questions are provided as worked solution demonstration videos as well as the final code
here.
Do the numbered questions in a file called programs.py
Write a program that calculates a new value based on an original value and a (percentage-like) increase or decrease.
Ask the user for the original and the change, then print all 3 values (including the new result) in one statement.
Examples (only output is shown):
- Original: 100, Change: 0.05, Result: 105
- Original: 50.5, Change: -0.1, Result: 45.45
Make sure you read the note below before completing this question.
Ask the user for two inputs: the time of day (0-23 hours) and if they are coming or going.
Then print a statement about their situation, like:
It is before noon and you are coming. Hi!
It is after noon and you are going. Bye!
Remember the DRY (Don't Repeat Yourself) principle?
The intention with this exercise is for you to see that what the user inputs for these 2 questions are unrelated.
You can store the results to be printed in string variables and then print a SINGLE output using those variables.
You do NOT want to handle this with multiple separate print statements; one for each possible outcome.
Why not?
Because in ALL cases, you print one thing. So, you should have one single print statement... but customise what you
print based on the 2 user inputs.
Also, there's no such thing as "noon" :) As soon as you hit 12, it's "after noon".
Do not use any error-checking; just assume the user will enter correct inputs.
- Ask the user for white or black coffee
- Ask for their chosen size: small, medium or large
- Then print the cost: For Black: Small = $3, Medium = $4, Large = $5.
White coffee costs $1 more no matter what size is chosen, e.g., a white medium is $5. - If a user makes a mistake with either part of their order, just pick the most expensive option in each case :)
E.g., a purple small coffee would cost $4, a black tiny coffee would cost $5, and a green extra small would cost $6. (This can be done by thinking about the default case for each user input.)
Once again, please DRY. Do you see that white coffee costs $1 more than black? So, you don't need to handle these as multiple separate cases. You will only need one decision for size, then one decision for colour. Keep it simple!
Note: You can use the string methods .upper() or .lower() to make your string comparisons case-insensitive, e.g.,
string = input("Prompt: ").lower()
if string == "string":
print("It matches without capitals")For this question, duplicate your coffee orders program, and rewrite it as a new version with error-checking.
You must submit both questions, so don't change the other code.
Your error-checking should repeat until the user enters valid inputs. Note that this means you no longer assume/choose
the expensive option, because it won't be possible to choose the colour "purple" or a wrong size. Rewrite your code
constructs to take this into consideration effectively if needed.
Write a program to ask the user for a low value and a high value.
Then print all the integers between those values inclusive and show the total of those numbers.
Example, if the inputs were 10 and 20, you would print:
10 11 12 13 14 15 16 17 18 19 20 totals: 165
Now (only after this works) add error-checking to ensure that the high value is actually higher than the low value.
The following code is intended to help a bouncer manage PyNightclub.
Under 18's are not allowed entry.
18-29 year olds may only enter the 'limited' section,
but patrons aged 30+ get full access.
Copy the code into your programs.py file and test it.
In the comments below the code, list all the values that you should and did test with.
Remember that we have taught systematic ways to test code, so there should be no guesswork here.
Once you have run your tests, see if you can fix any errors in the best way possible.
Change the provided code and submit your improved code.
Test again with the good test values that you determined above.
# 6. Debugging
age = int(input("Age: "))
if age < 18:
print("Entry refused")
elif age < 30:
print("Limited entry allowed")
elif age > 30:
print("Full entry allowed")
# Test values:
# (Input and expected outcomes)
# ...File: happy_products.py
Happy Products is an exciting new company that provides happy products to people who use their awesome new software...
But it's up to you to write this awesome new software.
They want a menu with the options:
- Instructions
- Calculate
- Quit
When you calculate, you are asked how many products you want to buy and at what price (see how exciting this is?).
If you buy 0-5 items, they're full price, over 5 items and each one is 10% off!
Examples:
- 5 x $10 products = $50
- 6 x $50 products = $270
Fewer than 0 items is invalid and so are negative/$0 products, so keep prompting the user until they enter valid
inputs.
The menu should also handle invalid choices by printing "Invalid choice".
The instructions are:
Enter the number of products you want to buy and your chosen price. If you buy 0-5 items, they're full price, over 5 items and each one is 10% off!
Here is some sample output from a run of the program:
Menu:
(I)nstructions
(C)alculate
(Q)uit
Choice: w
Invalid choice
Menu:
(I)nstructions
(C)alculate
(Q)uit
Choice: I
Enter the number of products you want to buy and your chosen price.
If you buy 0-5 items, they're full price, over 5 items and each one is 10% off!
Menu:
(I)nstructions
(C)alculate
(Q)uit
Choice: c
Number of products: -1
Invalid input
Number of products: 0
Price: 450.32
0 x $450.32 products = $0.00
Menu:
(I)nstructions
(C)alculate
(Q)uit
Choice: C
Number of products: 3
Price: 12.34
3 x $12.34 products = $37.02
Menu:
(I)nstructions
(C)alculate
(Q)uit
Choice: c
Number of products: 6
Price: 100
6 x $100.00 products = $540.00
Menu:
(I)nstructions
(C)alculate
(Q)uit
Choice: q
Farewell
This section summarises the expectations for marking in this practical.
Please follow the submission guidelines to ensure you receive marks for your work.
Files required:
-
questions.txtwith personal reflection -
programs.pywith all of the numbered checkpoint questions:
- Percentage program (I, P, O)
- Time of day (Decision)
- Coffee orders (Decision)
- Coffee orders with error-checking (Repetition)
- Accumulation (Repetition)
- Debugging (code and test values)
happy_products.py(All Together Now)