print() parameters and formatting in Python - Mini Project: Build & Apply

Using print() Parameters and Formatting

📖 Scenario: You are creating a simple program to display a shopping list clearly on the screen. You want to control how the items appear by using different print() options.

🎯 Goal: Learn how to use the print() function's parameters like sep and end, and how to format output with f-strings.

📋 What You'll Learn

Create a list of shopping items

Set a separator string for printing items

Use a for loop to print items with the separator

Format and print a summary line using an f-string

💡 Why This Matters

🌍 Real World

Formatting output clearly is important when showing lists or reports in programs, like shopping lists or logs.

💼 Career

Understanding print formatting helps in debugging and creating user-friendly console applications.

1

Create a list of shopping items

Create a list called shopping_list with these exact items: 'apples', 'bananas', 'carrots', 'dates'

Python

# Create the list shopping_list with the items
# Your code here

Need a hint?

Use square brackets [] and separate items with commas.

2

Set a separator string

Create a variable called separator and set it to the string ', ' (a comma followed by a space).

Python

shopping_list = ['apples', 'bananas', 'carrots', 'dates']
# Create the separator variable with the value ', '
# Your code here

Need a hint?

Use quotes around the comma and space.

3

Print items using the separator

Use a for loop with variable item to go through shopping_list. Inside the loop, use print() to print each item followed by the separator without moving to a new line after each print.

Python

shopping_list = ['apples', 'bananas', 'carrots', 'dates']
separator = ', '
# Use a for loop to print each item with the separator without new lines
# Your code here

Need a hint?

Use the end parameter of print() to avoid new lines.

4

Print a formatted summary line

After the loop, print a new line with the text Total items: 4 using an f-string and the len() function on shopping_list.

Python

shopping_list = ['apples', 'bananas', 'carrots', 'dates']
separator = ', '
for item in shopping_list:
    print(item, end=separator)
# Print the total number of items using an f-string
# Your code here

Need a hint?

Use print(f"\nTotal items: {len(shopping_list)}") to start on a new line and show the count.