Interactive Quiz ⋅ 10 QuestionsBy Ian Eyre Share In this quiz, you’ll test your understanding of the techniques covered in How to Work With Polars LazyFrames. By working through the questions, you’ll review your understanding of why LazyFrames are an efficient and preferred way of working in Polars. You’ll need to do some research outside of the tutorial to answer all the questions, so let this challenge take you on a learning journey. The quiz contains 10 questions and there […]

A Polars LazyFrame provides an efficient way to handle large datasets through lazy evaluation. Unlike traditional DataFrames, LazyFrames don’t contain data but instead store a set of instructions known as a query plan. Query plans perform operations like predicate and projection pushdown, ensuring only necessary rows and columns are processed. LazyFrames also support the parallel execution of query plans, further enhancing performance. By the end of this tutorial, you’ll understand that: A Polars LazyFrame allows efficient data processing by storing […]

Python has a few important naming conventions that are based on using either a single or double underscore character (_). These conventions allow you to differentiate between public and non-public names in APIs, write safe classes for subclassing purposes, avoid name clashes, and more. Following and respecting these conventions allows you to write code that looks Pythonic and consistent in the eyes of other Python developers. This skill is especially useful when you’re writing code that’s intended for other developers […]

Watch Now This tutorial has a related video course created by the Real Python team. Watch it together with the written tutorial to deepen your understanding: Sorting Data With Python Sorting in Python is a fundamental task that you can accomplish using sorted() and .sort(). The sorted() function returns a new sorted list from the elements of any iterable, without modifying the original iterable. On the other hand, the .sort() method modifies a list in place and doesn’t return a […]

Interactive Quiz ⋅ 7 QuestionsBy Philipp Acsany Share In this quiz, you’ll test your understanding of sorting in Python. By working through this quiz, you’ll revisit how to sort various types of data in different data structures, customize the order, and work with two different ways of sorting in Python. The quiz contains 7 questions and there is no time limit. You’ll get 1 point for each correct answer. At the end of the quiz, you’ll receive a total score. […]

The pyproject.toml file simplifies Python project configuration by unifying package setup, managing dependencies, and streamlining builds. In this tutorial, you’ll learn how it can improve your day-to-day Python setup by exploring its key use cases, like configuring your build system, installing packages locally, handling dependencies, and publishing to PyPI. By the end of this tutorial, you’ll understand that: pyproject.toml is a key component for defining a Python project’s build system, specifying requirements and the build backend. Dependencies and optional dependencies […]