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Mastering Polars: Fast Data Processing & Analysis of Big Data

person icon Olha Piliaieva

4.3

Mastering Polars: Fast Data Processing & Analysis of Big Data

Master Polars for Fast Data Manipulation: Work with Large Datasets, Lazy Execution, Performance Optimization, and More

updated on icon Updated on Jun, 2025

language icon Language - English

person icon Olha Piliaieva

category icon Development ,Data Science,Data Analysis

Lectures -10

Duration -1 hours

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4.3

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Course Description

Ready to accelerate your data analysis? In this course, you'll learn about Polars, a high-performance and fast library that is meant to work efficiently with large datasets. If you've encountered performance issues with Pandas or need to accelerate your work with big data, this course is ideal for you. I'll take you through it all - from the basics of loading and working with data to advanced methods such as lazy evaluation and chunk processing. You'll see how to contrast Polars with Pandas in real-world situations, and why Polars may be the breakthrough tool you've been looking for. By the end of this course, you’ll be able to process millions of rows in a fraction of the time it takes with traditional methods. Join me and learn how to optimize your workflow and elevate your data analysis skills.
In this course, we have real-world datasets several gigabytes in size and more than 100 million rows in number. These large CSV files can be downloaded from the links below to work through the examples in this course.

Here is the link to download the dataset from GitHub, utilized in the project:
======> git hub Data csv
The second CSV file utilized in the project is obtained from Kaggle. Following is the link:
======> kaggle Data

You will learn:
Introduction to Polars: Why It's Faster and How It Differs from Pandas
Polars Installation, Data Frame Loading, and Efficient Column Access
Data Manipulation in Polars: Arithmetic Operations, Column Management, Filtering
Mastering Polars Data Frames: Slicing, Stats, and Data Exploration
Polars Data Frame Methods: Flags, Schema, Column Operations, and Conversion
Advanced Data Manipulation: Grouping, Aggregation, Sorting, and Transformation
Advanced Polars Operations: write csv, Pivot Tables, and Join Strategies
Eager vs Lazy Execution in Polars: Speed Comparison with Pandas
Data Visualization in Polars. Benefits, Limitations, and Comparison.

Goals

This course will help you learn to process and analyze large datasets quickly using Polars' high-capacity features of data manipulation and performance optimization.
In this course, you'll learn the fundamental techniques and tools in Polars to process large datasets effectively and optimize your data pipelines.
You will learn:
  • Learn the fundamentals of Polars and its functionality.
  • Efficient Data Loading: How to load large data into Polars with efficiency.
  • Data Manipulation: Use different data transformation methods, such as filtering, sorting, and aggregation.
  • Lazy Evaluation: How lazy evaluation in Polars enhances computation efficiency and memory consumption.
  • Chunk Processing: How to process large data in chunks for efficient memory management.
  • Comparison with Pandas: Compare the performance and functionality of Polars with the default Pandas library.
  • Tracking Memory Usage: Examine how memory utilization and performance can be gauged when dealing with big data.
  • Performance Optimization: Observe how performance can be optimized while working with huge datasets.

Prerequisites

  • Installed Python (preferably version 3.x)
  • Jupyter Notebook or similar IDE (like VS Code or PyCharm)
  • Polars and Pandas libraries must be installed.
  • Basic familiarity with Python is helpful but not required - beginners are welcome!
Mastering Polars: Fast Data Processing & Analysis of Big Data

Curriculum

Check out the detailed breakdown of what’s inside the course

Introduction

1 Lectures
  • play icon Introduction: What You Will Learn in This Course 01:34 01:34

Getting Started with Polars

9 Lectures
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Instructor Details

Olha Piliaieva

Olha Piliaieva

Software Developer & Tech Enthusiast
Hi, I'm Olga, a practicing software developer with a deep passion for sharing my knowledge and experience. I love creating well-structured courses that focus on the most important concepts, breaking them down into easy-to-understand lessons. My goal is to make learning efficient and enjoyable by delivering content in a clear and straightforward manner. I believe that everyone can grow in the world of software development, and I’m here to help you succeed by providing practical insights and real-world examples. I truly enjoy empowering others to learn, grow, and become skilled developers.

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