ament_pep257 command not found

Introduction

When you run more command in linux terminal / console, you get the following error message

ament_pep257: command not found

or when using sudo you get the following error message

sudo: ament_pep257: command not found

Solutions to ament_pep257: command not found

How To Fix ament_pep257: command not found in Ubuntu / Debian / Kali Linux / Raspbian

In Ubuntu ament_pep257 is provided by python3-ament-pep257 package.

python3-ament-pep257 is:

The ament build system is the most common way to build packages for ROS 2. This package provides the Python 3 module that adds PEP-257 validation with pydocstyle to ament.

To fix this problem, we can install more using the command below.

sudo apt-get -y install python3-ament-pep257

This command might take some time to finish depending on your machine internet connection.

You can also use apt command to install python3-ament-pep257.

sudo apt -y install python3-ament-pep257

Or if you have aptitude installed you can use the following command.

sudo aptitude install python3-ament-pep257

Summary

In this tutorial we learn how to fix ament_pep257 command not found error in Ubuntu / Debian / Kali Linux or Raspbian distribution.