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63. Filtering and Exporting

Add advanced features to filter and export tasks.

Filtering by Completion​

def list_completed():
    return [t for t in tasks if t["done"]]

Exporting to CSV​

import csv

def export_csv(filename="tasks.csv"):
    with open(filename, "w", newline="") as f:
        writer = csv.DictWriter(f, fieldnames=["id", "title", "done"])
        writer.writeheader()
        writer.writerows(tasks)

Wrap-Up​

Filtering and exporting improve usability and integration.