Reference library

Data pipelines & processing

ETL-style flows, batch transforms, validation, and moving data between formats.

1 match
Data pipelines & processing easy

How to Sort a List of Dictionaries by Key in Python

A reusable helper function that sorts a list of dictionaries by a specified key, with optional descending order support.

sorting dictionaries data-pipelines
Python 
from typing import List

def sort_records(records: List[dict], key: str, descending: bool = False) -> List[dict]:
    """Sort a list of dictionaries by a specified key."""
    return sorted(records, key=lambda record: record[key], reverse=descending)


def demonstrate_sorting() -> None:
    users = [
        {"name": …
12 0 Open

Browse by section

Each section groups closely related Python snippets.

Data pipelines & processing — Python code examples

What you will find here

This page collects data pipelines & processing snippets — short, copy-ready Python you can paste into our free online IDE and run without installing anything. Each sample includes a plain-English explanation and the full source code.

Samples vs tutorials and challenges

Samples are quick reference — one concept per page. For step-by-step teaching, use our Python tutorials. To test yourself, try quizzes or coding challenges. Clean up style with the Python formatter.

Related coding tools

Free online Python IDE Write and run Python in your browser — no install. Free Python code formatter Format with autopep8 — side-by-side PEP 8 cleanup. Python code samples Copy-ready snippets to study and run in the IDE.