Why good design reduces maintenance cost in Software Engineering - See It in Action

Why Good Design Reduces Maintenance Cost

📖 Scenario: Imagine you are part of a team building a software application for a local library. The software needs to be easy to update and fix over time because the library staff will add new features and fix bugs regularly.

🎯 Goal: Build a simple explanation project that shows how good software design choices help reduce the cost and effort of maintaining software over time.

📋 What You'll Learn

Create a list of common software design principles

Add a variable to represent maintenance cost

Use a loop to explain how each design principle helps reduce maintenance cost

Summarize the final benefit of good design on maintenance cost

💡 Why This Matters

🌍 Real World

Software developers use good design to keep software maintainable and affordable over time.

💼 Career

Understanding design principles helps engineers write code that is easier to maintain, saving companies money and effort.

1

Create a list of software design principles

Create a list called design_principles with these exact items: 'Modularity', 'Readability', 'Documentation', 'Testing', and 'Consistent Naming'.

Software Engineering

# Create the list design_principles with the given items
# Your code here

Hint

Use square brackets to create a list and separate items with commas.

2

Add a variable for maintenance cost

Create a variable called maintenance_cost and set it to 10000 to represent the initial maintenance cost in dollars.

Software Engineering

design_principles = ['Modularity', 'Readability', 'Documentation', 'Testing', 'Consistent Naming']
# Create maintenance_cost variable and set it to 10000
# Your code here

Hint

Just assign the number 10000 to the variable maintenance_cost.

3

Explain how design principles reduce maintenance cost

Use a for loop with the variable principle to iterate over design_principles. Inside the loop, reduce maintenance_cost by 1000 for each principle to show how each one helps lower the cost.

Software Engineering

design_principles = ['Modularity', 'Readability', 'Documentation', 'Testing', 'Consistent Naming']
maintenance_cost = 10000
# Use a for loop to reduce maintenance_cost by 1000 for each principle
# Your code here

Hint

Use a for loop to go through each principle and subtract 1000 from maintenance_cost inside the loop.

4

Summarize the benefit of good design

Create a variable called summary and set it to the string 'Good design lowers maintenance cost by making software easier to update and fix.'

Software Engineering

design_principles = ['Modularity', 'Readability', 'Documentation', 'Testing', 'Consistent Naming']
maintenance_cost = 10000
for principle in design_principles:
    maintenance_cost -= 1000
# Create summary variable with the given explanation
# Your code here

Hint

Assign the exact string to the variable summary.