IST356 Assignment 02 (assignment_02)

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Learning Objectives

This assignment will get you working with your first module. It will also test your ability to work with lists, dictionaries, parsing and tokenizing textual data.

Assignment Layout

The each assignment will have a common layout.

• code folder contains our code / application. This is where you will create files and write code.
• code/solution folder contains the solution to the assignment, for reference.
• data data files folder
• tests folder contains code to test our application
• requirements.txt contains the packages we need to pip install to execute the application code
• readme.md contains these instructions
• .vscode folder contains VS Code setup configurations for running / debugging the application and tests.
• reflection.md is where you submit your reflection, comments on what you learned, things that confuse you, etc.

Prerequisites

Before starting this assignment you must:

Install the assignemnt python requirements:

1. From VS Code, open a terminal: Menu => Terminal => New Terminal
2. In the terminal, type and enter: pip install -r requirements.txt

Running Tests

There is some code and tests already working in this assignment. These are sanity checks to ensure VS Code is configured properly.

1. Open Testing in the activity bar: Menu => View => Testing
2. You'll need to install the testing tools. Choose pytest
3. Open the > by clicking on it next to assignment_01. Keep clicking on > until you see test_sould_pass in the test_assignment.py
4. Click the Play button |> next to test_should_pass to execute the test.
5. A green check means the test code ran and the test has passed.
6. A red X means the test code ran but the test has failed. When a test fails you will be given an error message and stack trace with line numbers.

Assignment

In this assignment you will parse text input (from a file) of package sizes into a python list of dictionary. You will write the parsed data out in JSON format.

You must complete the functions in packaging.py first and then write the main program.py The instructions for each can be found in their respective files. There isn't a significant amount of code you will need to write but you will need to likely use the tests provided and debugger ro figure out how to produce the correct code.

Advice

packaging.py

• Function definitions with type hints and doc strings have been written for you. just complete the function body.
• Use the pytest tests to ensure your functions are correct
• The tests will not debug, so set a breakpoint under the if __name__=='__main__' section and debug the code that way.

parse packaging function tips:

• Split on "/" to get each item e.g. 12 eggs in 1 carton
• Split each item on " in " to get the unit e.g. 12 eggs

program.py

• loop through the file a line at a time
• don't forget to strip the whitespace from the line before using it