Design Requirements

Always design first before continuing with coding, and review your design if needed. See Design Descriptions in the Resources.

Design the solution to each function/method in the Python module, guided by what you’ve learned about the function/method from writing and running the test cases.
Write the design in a new DESIGN.md file. It uses Markdown language. Become familiar with basic Markdown tags.
Start by copying the function header from the Python modules into DESIGN.md file using the Markdown code highlighting tags, ```.
Write your description of the computational steps that represent the logic of your solution. Use Markdown tags:
- list tag * to itemize the computational steps
- syntax highlighting tag ` for variable names
- emphasis tags for bold and italics when you want to point to certain important ideas
The description of the computational steps must:
- Be written in English (not Python or pseudocode).
- Guide your coding by using problem-solving patterns, such as the accumulation pattern.
- Answer the question, “Why?”, you include a particular computational step.
- Introduce suggestive names for local variables that computational steps need to use.
If a computational step is too complex:
- first say what it will do,
- then break it down into simpler computational steps.
This development step MUST happen BEFORE you implement the function.

Version control

When the implementation runs correctly, commit changes associated with this unit of development.

Note: