Published lesson · 25 minutes
Values, strings and input
Objective: Store text and numbers, and convert simple input into values a program can use.
Understand the idea
This lesson focuses on values, strings and input. Store text and numbers, and convert simple input into values a program can use. We will use a familiar community situation to make the idea concrete, then break it into decisions you can explain. You do not need special equipment or previous experience beyond the course prerequisites.
A budgeting helper can ask for a weekly amount and a category, then display a short summary for the learner. Start by naming the information or action involved, then consider what a visitor or learner needs to understand. This small planning step makes the example easier to follow and helps you notice assumptions before they become confusing.
A string stores text while an integer stores a whole number; input arrives as text and may need conversion. The example is synthetic and contains no real organisation, personal details or promises about services. Treat it as a learning model: adapt the structure to your own situation, and check details with the people responsible before publishing anything publicly.
Choose variable names that explain their meaning. Convert numeric input deliberately and handle a blank response before doing arithmetic. Try changing one detail at a time and describe what changed. When something behaves differently from what you expected, return to the goal and inspect the relevant part instead of changing several things at once.
Use a tiny sample first and compare the displayed result with a hand calculation. A useful review asks whether the result is clear, usable and appropriate for the intended audience. Invite another person to try it when possible, and make improvements based on what they can actually understand or do.
Worked examples
Values, strings and input: a small example
See how values, strings and input can help communicate or solve a practical community task.
main.py
category = 'travel'
weekly_amount = 250
print(f'{category}: R{weekly_amount}')Practice tasks
Explore values, strings and input
Use the worked example for “Values, strings and input”. Change one small detail to suit a different synthetic community situation, then explain what you expected and how you checked whether the change still met the lesson objective.
Build a Python practice example
Create a small practice result that demonstrates this objective: Store text and numbers, and convert simple input into values a program can use. Use only synthetic information, keep the first version focused, and write down one limitation that a later version should address.
Review and explain the result
Review your “Values, strings and input” result as if another learner will use it without your explanation. Identify one strength, one exact point that may be unclear, and a revision that would make the result easier to understand or use.
Values, strings and input becomes easier when you start with a clear purpose, try one small step and check the result from the learner or community member's point of view.
Course overview