Install Polars in Python Step by Step

Polars is a fast DataFrame library for Python. It is designed for high performance. This guide will help you install it easily.

Prerequisites

Before installing Polars, ensure you have Python installed. You can check by running python --version in your terminal.

 
# Check Python version
python --version

Python 3.9.7

If you don't have Python, download it from the official website. Also, ensure pip is installed. Pip is Python's package manager.

Install Polars Using Pip

The easiest way to install Polars is using pip. Open your terminal and run the following command.

 
pip install polars

This will download and install the latest version of Polars. Wait for the installation to complete.

Verify the Installation

After installation, verify Polars is installed correctly. Open a Python shell and import Polars.

 
# Verify Polars installation
import polars as pl
print(pl.__version__)

0.15.0

If you see the version number, Polars is installed correctly. If not, check for errors.

Install Polars with Optional Dependencies

Polars has optional dependencies for extra features. Use the following command to install them.

 
pip install polars[all]

This includes support for Parquet, Excel, and more. It is useful for advanced users.

Common Installation Issues

Sometimes, you may encounter errors. One common issue is ModuleNotFoundError. This means Polars is not installed.

If you face this, re-run the installation command. For more help, see our guide on How To Solve ModuleNotFoundError.

Using Polars in Your Project

Once installed, you can start using Polars. Here is a simple example to create a DataFrame.

 
# Create a Polars DataFrame
import polars as pl

df = pl.DataFrame({
    "name": ["Alice", "Bob", "Charlie"],
    "age": [25, 30, 35]
})

print(df)

shape: (3, 2)
┌─────────┬─────┐
│ name    │ age │
│ ---     │ --- │
│ str     │ i64 │
╞═════════╪═════╡
│ Alice   │ 25  │
│ Bob     │ 30  │
│ Charlie │ 35  │
└─────────┴─────┘

This shows how easy it is to work with Polars. You can now explore its powerful features.

Conclusion

Installing Polars in Python is simple. Just use pip and verify the installation. Polars is a great tool for fast data processing.

If you face issues, check the error messages. For more help, refer to the official Polars documentation. Happy coding!