Batch delete patterns in Rest API - Mini Project: Build & Apply

Batch Delete Patterns with REST API

📖 Scenario: You are building a simple REST API to manage a list of tasks. Sometimes, users want to delete multiple tasks at once instead of deleting them one by one.Batch deleting helps users save time by removing many tasks in a single request.

🎯 Goal: Build a REST API endpoint that accepts a list of task IDs and deletes all those tasks in one batch operation.You will create the initial data, set up a list of IDs to delete, write the batch delete logic, and finally show the remaining tasks.

📋 What You'll Learn

Create a dictionary called tasks with these exact entries: 1: 'Buy groceries', 2: 'Clean room', 3: 'Pay bills', 4: 'Call mom', 5: 'Read book'

Create a list called delete_ids with these exact values: 2, 4

Use a for loop with variable task_id to iterate over delete_ids and delete each task_id from tasks if it exists

Print the tasks dictionary after deletion to show remaining tasks

💡 Why This Matters

🌍 Real World

Batch deleting is common in apps like email clients, to-do lists, or file managers where users want to remove many items quickly.

💼 Career

Understanding batch operations and safe deletion is important for backend developers building efficient and user-friendly APIs.

1

Create the initial tasks dictionary

Create a dictionary called tasks with these exact entries: 1: 'Buy groceries', 2: 'Clean room', 3: 'Pay bills', 4: 'Call mom', 5: 'Read book'

Rest API

# Create the tasks dictionary with given entries
# Your code here

Need a hint?

Use curly braces {} to create a dictionary with keys as numbers and values as strings.

2

Set up the list of task IDs to delete

Create a list called delete_ids with these exact values: 2, 4

Rest API

tasks = {1: 'Buy groceries', 2: 'Clean room', 3: 'Pay bills', 4: 'Call mom', 5: 'Read book'}
# Create the delete_ids list with values 2 and 4
# Your code here

Need a hint?

Use square brackets [] to create a list with the numbers 2 and 4.

3

Write the batch delete logic

Use a for loop with variable task_id to iterate over delete_ids and delete each task_id from tasks if it exists

Rest API

tasks = {1: 'Buy groceries', 2: 'Clean room', 3: 'Pay bills', 4: 'Call mom', 5: 'Read book'}
delete_ids = [2, 4]
# Use a for loop to delete tasks with IDs in delete_ids
# Your code here

Need a hint?

Use del tasks[task_id] inside the loop to remove the task if it exists.

4

Print the remaining tasks

Write print(tasks) to display the tasks dictionary after deletion

Rest API

tasks = {1: 'Buy groceries', 2: 'Clean room', 3: 'Pay bills', 4: 'Call mom', 5: 'Read book'}
delete_ids = [2, 4]
for task_id in delete_ids:
    if task_id in tasks:
        del tasks[task_id]
# Print the tasks dictionary
# Your code here

Need a hint?

Use print(tasks) to show the dictionary after deletion.