Description
You must give a word count for any question part with a maximum word limit.
This question tests your understanding of Block 3 Part 2 , and, more generally, the problem-solving and Python programming skills that are covered by the module. The question is concerned with an extension to the flashcard problem you studied in Block 3 Part 2.
In the original flashcard problem, a user can ask the program to show an entry picked randomly from a glossary. When the user presses return, the program shows the definition corresponding to that entry. The user is then given the option of seeing another entry or quitting.
A sample session might run like this:
Enter s to show a flashcard and q to quit: s
Define: word1
Press return to see the definition
definition1
Enter s to show a flashcard and q to quit: s
Define: word3
Press return to see the definition
definition3
Enter s to show a flashcard and q to quit: q
In the modified version the user is sometimes shown the entry first and then the definition, but sometimes they are shown in reverse order. Which order is followed entry then definition or definition then entry is decided randomly
Box 1 Statement of extended problem
The program should allow the user to ask for a glossary flashcard. In response, the program should pick an entry at random from all glossary entries. It should then choose at random whether to show the user the entry itself or the associated definition. When the user presses return the user should be shown either the corresponding definition, if the entry was displayed first, or the corresponding entry if the definition was displayed first.
The user should be able to repeatedly ask for a flashcard and also have the option to quit the program instead of seeing another card.
A sample dialogue might run as follows.
Enter s to show a flashcard and q to quit: s
What is the entry for the definition definition2
Press return to see the entry
word2
Enter s to show a flashcard and q to quit: s
What is the definition for the entry word1
Press return to see the definition
definition1
Enter s to show a flashcard and q to quit: s
What is the entry for the definition definition2
Press return to see the entry
word2
Enter s to show a flashcard and q to quit: q
>>>
For the purposes of developing the program, we will use a small glossary with just three dummy entries, chosen so we can easily see which definitions correspond to each entry.
Box 2 Keeping a notebook
As you work through part (a) of this question you should keep a notebook. You will need this for your answer to part (a)(iv). This should be very brief: it is simply a record of your personal experience while working on the task and what you feel you have learned from it.
In your notebook we suggest that you record the following information:
| How | A brief description of how you went about the task. |
| Resources | What documentation, if any, you consult (including course materials and any online sources) and which you find most useful? There is no need for full references, just note the source, and in the case of the course materials what the relevant part and section or activity was. |
| Difficulties | Anything you found difficult about the task, and how you dealt with it. |
| Lessons learned | Anything you learned from the task that would be useful if you faced a similar problem in the future? |
- a.
- i.The only parts of the code that you will need to change are in the body of the function show_flashcard.Write an algorithm for the following section in Box 1, reproduced here for convenience.In response, the program should pick an entry at random from all glossary entries. It should then choose at random whether to show the user the entry itself or the associated definition. When the user presses return the user should be shown either the corresponding definition, if the entry was displayed first, or the corresponding entry, if the definition was displayed first.The steps of your algorithm must be written in English, not Python code, as algorithms should be implementable in any programming language, not just Python. What pattern from Block 1 Part 1 does your algorithm use? You may find it useful to look through the list of patterns in the Problem solving and Python quick reference.
- ii.Discuss briefly how you will test the program. Only a short answer is required, and you do not need to give examples, only describe what approach you will follow.
- iii.Now you will implement your algorithm as Python code.We have provided a starter script which is included in the download for this TMA as Q2.py. Begin by saving a copy of the provided program as Q2_OUCU.py (where OUCU is your OU computer username, e.g. abc123).The starter script is the first complete version of the flashcard program as developed in Block 3 Part 2. The code that sets up the glossary, and the interactive loop, do not need to be changed and you should not alter these parts of the program in any way.Complete the new version of show_flashcard() by adding code, where indicated by comments, that will implement the algorithm you produced in Part i. You should use appropriate comments to make it clear how the code you have written corresponds to the steps in the algorithm.You will need to write code that simulates the toss of a coin, to decide randomly whether to show the entry first or the corresponding definition. This is touched on in subsection 2.2.2 of Block 3 Part 2, which you may find it useful to revisit.Important: also make sure you write suitable docstrings for the modified function and the program as a whole, to reflect the changed behaviour.Copy the complete program into your Solution Document. Also include your completed .py file in your TMA zip file.Notes1. You should aim to use only the Python features that are introduced in the module. If you decide to use techniques or language features that TM112 does not cover you must give a justification for your decisions, or marks will be lost.2. You should not make any changes to the program except where indicated.3. If you are unable to get the program working correctly, you should still copy your code into your Solution Document and submit your .py file, with a brief explanation of how the results are different from what you were intended
- iv.Finally, copy the notebook you have kept for this question into the corresponding part of your Solution Document.
(19 marks)
.Suggest one further small extension or improvement of your own to the modified flashcard program. Outline what the extension does and briefly say what additional sub-problem(s) would need to be added to the initial decomposition.
Note that you are only required to describe your further extension and do not need to implement it in code.
The maximum word count for this part of the question is 150 words, including the added sub-problem(s).
(4 marks)
