How to Install Trio in Python Step by Step

Trio is a powerful Python library for async I/O. It helps write concurrent code easily. This guide will show you how to install Trio step by step.

Prerequisites

Before installing Trio, ensure you have Python 3.6 or higher. Check your Python version using python --version.

 
# Check Python version
python --version

Python 3.9.7

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

Install Trio Using pip

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

 
pip install trio

Successfully installed trio-0.20.0

This will install the latest version of Trio. If you encounter a ModuleNotFoundError, check out our guide on how to solve ModuleNotFoundError.

Verify the Installation

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

 
# Verify Trio installation
import trio
print(trio.__version__)

0.20.0

If no errors appear, Trio is installed successfully. You can now start using it in your projects.

Create a Simple Trio Program

Let's create a simple async program using Trio. This example prints numbers with a delay.

 
import trio

async def print_numbers():
    for i in range(5):
        print(i)
        await trio.sleep(1)

trio.run(print_numbers)

0
1
2
3
4

The trio.run function starts the async program. The await trio.sleep(1) adds a 1-second delay.

Common Issues and Fixes

Sometimes, you may face issues during installation. Here are some common problems and their solutions.

Issue 1: Pip not found. Ensure pip is installed by running python -m ensurepip --upgrade.

Issue 2: Permission denied. Use pip install --user trio to install without admin rights.

Issue 3: Old Python version. Upgrade Python to the latest version.

Conclusion

Installing Trio in Python is simple with pip. Follow this guide to set it up quickly. Trio makes async programming easy and efficient.

Now you can explore more advanced Trio features. Happy coding!