nltk command not found

Introduction

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

nltk: command not found

or when using sudo you get the following error message

sudo: nltk: command not found

Solutions to nltk: command not found

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

In Ubuntu nltk is provided by python3-nltk package.

python3-nltk is:

The Natural Language Toolkit (NLTK) is a leading platform for building Python programs to work with human language data. It provides easy-to-use interfaces to over 50 corpora and lexical resources such as WordNet, along with a suite of text processing libraries for classification, tokenization, stemming, tagging, parsing, and semantic reasoning.

This package contains the modules for Python3.

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

sudo apt-get -y install python3-nltk

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

You can also use apt command to install python3-nltk.

sudo apt -y install python3-nltk

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

sudo aptitude install python3-nltk

Summary

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