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Episode 243: Manage Projects With pyproject.toml & Explore Polars LazyFrames

The Real Python Podcast

Mar 14, 2025 48m

The Real Python Podcast
#243: Manage Projects With pyproject.toml & Explore Polars LazyFrames
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How can you simplify the management of your Python projects with one file? What are the advantages of using LazyFrames in Polars? Christopher Trudeau is back on the show this week, bringing another batch of PyCoder’s Weekly articles and projects.

We share a recent Real Python tutorial by Ian Currie about managing projects with a pyproject.toml file. This file simplifies Python project configuration by unifying package setup, managing dependencies, and streamlining builds.

Christopher continues his exploration of the Polars library by covering another Real Python tutorial about working with LazyFrames. He describes how LazyFrames don’t contain data but instead store a set of instructions known as a query plan.

We also share several other articles and projects from the Python community, including a news roundup, building a to-do app with Python and Kivy, working with DuckDB directly instead of using a DataFrame library, a discussion on fiction and nonfiction books about computer science, a terminal visual effects engine, and a full-stack platform for interactive data apps.

Topics:

  • 00:00:00 – Introduction
  • 00:02:00 – Happy Pi Day!
  • 00:02:15 – Follow-up: Is BDD Dying?
  • 00:03:32 – Django security releases issued: 5.1.7, 5.0.13 and 4.2.20
  • 00:04:01 – Django 5.2 Beta 1 Released
  • 00:04:11 – DjangoCon Africa Aug 2025 CFP
  • 00:04:29 – Launching the PyCon US 2025 Schedule
  • 00:04:48 – PyPy v7.3.19 Release
  • 00:05:06 – Poetry 2.0.0 Released
  • 00:05:34 – How to Manage Python Projects With pyproject.toml
  • 00:12:10 – Build a To-Do App With Python and Kivy
  • 00:16:22 – Mastering DuckDB When You’re Used to pandas or Polars
  • 00:21:08 – Video Course Spotlight
  • 00:22:42 – How to Work With Polars LazyFrames
  • 00:27:41 – Fiction/Non-Fiction Books on the Topic of CS?
  • 00:42:28 – preswald: Full-Stack Platform for Interactive Data Apps
  • 00:45:52 – terminaltexteffects: Terminal Visual Effects Engine
  • 00:47:59 – Thanks and goodbye

Follow-up:

News:

Show Links:

  • How to Manage Python Projects With pyproject.toml – Learn how to manage Python projects with the pyproject.toml configuration file. In this tutorial, you’ll explore key use cases of the pyproject.toml file, including configuring your build, installing your package locally, managing dependencies, and publishing your package to PyPI.
  • Build a To-Do App With Python and Kivy – “In this tutorial, you’ll go through a series of steps to build a basic To-Do app with Python, SQLite, and Kivy.”
  • Mastering DuckDB When You’re Used to pandas or Polars – Why use DuckDB / SQL at all if you’re used to DataFrames? This article makes the case for some reasons why, and shows how to perform some operations which in DataFrames are basic but in SQL aren’t necessarily obvious.
  • How to Work With Polars LazyFrames – In this tutorial, you’ll gain an understanding of the principles behind Polars LazyFrames. You’ll also learn why using LazyFrames is often the preferred option over more traditional DataFrames.

Discussion:

Project:

Additional Links:

Books Mentioned by Mr. Trudeau:

  • “The Cuckoo’s Egg” by Clifford Stoll
  • “Mythical Man Month” by Frederick Brooks
  • “Phoenix Project” by Gene Kim
  • “Dreaming in Code” by Scott Rosenberg
  • “Digital Fortress” by Dan Brown
  • “Godel Escher, Bach” by Douglas Hofstadlter
  • “A Philosophy of Software Design” by John Ousterhout’s
  • “I Hate The Internet” by Jarret Kobek
  • “Snow Crash” by Neal Stephenson
  • “Automate the Boring Stuff with Python” by Al Sweigart
  • “Django In Action” by Christopher Trudeau
  • “Refactoring Databases” by Scott W Ambler and Pramod J Sadalage
  • “The C Programming Language” by Dennis M. Ritchie and Brian W. Kernighan
  • “Open Source Licensing” by Lawrence Rosen
  • “The Quick Python Book” by Naomi R. Ceder
  • “Learn to Code By Solving Problems: A Python Programming Primer” by Daniel Zingaro
  • “Python Automation Cookbook” by Jaime Buelta

Books Mentioned by Mr. Bailey:

  • “The Little Schemer” by Daniel P. Friedman
  • “Zen and the Art of Motorcycle Maintenance” by Robert M. Pirsig
  • “Shop Class as Soulcraft: An Inquiry into the Value of Work” by Matthew B. Crawford
  • “Django for Beginners, APIs, and Professionals” by William S. Vincent
  • “Python Crash Course” by Eric Matthes
  • “Automate the Boring Stuff With Python” by Al Sweigart
  • “Fluent Python” by Luciano Ramalho
  • “Practices of the Python Pro” by Dane Hillard
  • “Daemon and Freedom™” by Daniel Suarez