How To Install python-simpleeval on Ubuntu 18.04

In this tutorial we learn how to install python-simpleeval on Ubuntu 18.04. python-simpleeval is Simple, safe single expression evaluator library (Python 2)

Introduction

In this tutorial we learn how to install python-simpleeval on Ubuntu 18.04.

What is python-simpleeval

python-simpleeval is:

Quick single file library for easily adding evaluatable expressions into Python projects.

Short, easy to use, safe and reasonably extensible expression evaluator. Designed for things like in a website where you want to allow the user to generate a string, or a number from some other input, without allowing full eval() or other unsafe or needlessly complex linguistics.

This package is targeting Python version 2.

There are three methods to install python-simpleeval on Ubuntu 18.04. We can use apt-get, apt and aptitude. In the following sections we will describe each method. You can choose one of them.

Install python-simpleeval Using apt-get

Update apt database with apt-get using the following command.

sudo apt-get update

After updating apt database, We can install python-simpleeval using apt-get by running the following command:

sudo apt-get -y install python-simpleeval

Install python-simpleeval Using apt

Update apt database with apt using the following command.

sudo apt update

After updating apt database, We can install python-simpleeval using apt by running the following command:

sudo apt -y install python-simpleeval

Install python-simpleeval Using aptitude

If you want to follow this method, you might need to install aptitude first since aptitude is usually not installed by default on Ubuntu. Update apt database with aptitude using the following command.

sudo aptitude update

After updating apt database, We can install python-simpleeval using aptitude by running the following command:

sudo aptitude -y install python-simpleeval

How To Uninstall python-simpleeval on Ubuntu 18.04

To uninstall only the python-simpleeval package we can use the following command:

sudo apt-get remove python-simpleeval

Uninstall python-simpleeval And Its Dependencies

To uninstall python-simpleeval and its dependencies that are no longer needed by Ubuntu 18.04, we can use the command below:

sudo apt-get -y autoremove python-simpleeval

Remove python-simpleeval Configurations and Data

To remove python-simpleeval configuration and data from Ubuntu 18.04 we can use the following command:

sudo apt-get -y purge python-simpleeval

Remove python-simpleeval configuration, data, and all of its dependencies

We can use the following command to remove python-simpleeval configurations, data and all of its dependencies, we can use the following command:

sudo apt-get -y autoremove --purge python-simpleeval

References

Summary

In this tutorial we learn how to install python-simpleeval package on Ubuntu 18.04 using different package management tools: apt, apt-get and aptitude.