How To Install python3-funcparserlib on Ubuntu 18.04
Introduction
In this tutorial we learn how to install python3-funcparserlib on Ubuntu 18.04.
What is python3-funcparserlib
python3-funcparserlib is:
For python3. Parser combinators are just higher-order functions that take parsers as their arguments and return them as result values. Parser combinators are:
First-class values. Extremely composable. Tend to make the code quite compact. Resemble the readable notation of xBNF grammars.
Parsers made with funcparserlib are pure-Python LL(*) parsers. It means that it’s very easy to write them without thinking about look-aheads and all that hardcore parsing stuff. But the recursive descent parsing is a rather slow method compared to LL(k) or LR(k) algorithms.
So the primary domain for funcparserlib is parsing little languages or external DSLs (domain specific languages).
The library itself is very small. Its source code is only 0.5 KLOC, with lots of comments included. It features the longest parsed prefix error reporting, as well as a tiny lexer generator for token position tracking.
There are three methods to install python3-funcparserlib 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 python3-funcparserlib Using apt-get
Update apt database with apt-get using the following command.
sudo apt-get update
After updating apt database, We can install python3-funcparserlib using apt-get by running the following command:
sudo apt-get -y install python3-funcparserlib
Install python3-funcparserlib Using apt
Update apt database with apt using the following command.
sudo apt update
After updating apt database, We can install python3-funcparserlib using apt by running the following command:
sudo apt -y install python3-funcparserlib
Install python3-funcparserlib 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 python3-funcparserlib using aptitude by running the following command:
sudo aptitude -y install python3-funcparserlib
How To Uninstall python3-funcparserlib on Ubuntu 18.04
To uninstall only the python3-funcparserlib package we can use the following command:
sudo apt-get remove python3-funcparserlib
Uninstall python3-funcparserlib And Its Dependencies
To uninstall python3-funcparserlib and its dependencies that are no longer needed by Ubuntu 18.04, we can use the command below:
sudo apt-get -y autoremove python3-funcparserlib
Remove python3-funcparserlib Configurations and Data
To remove python3-funcparserlib configuration and data from Ubuntu 18.04 we can use the following command:
sudo apt-get -y purge python3-funcparserlib
Remove python3-funcparserlib configuration, data, and all of its dependencies
We can use the following command to remove python3-funcparserlib configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge python3-funcparserlib
References
Summary
In this tutorial we learn how to install python3-funcparserlib package on Ubuntu 18.04 using different package management tools: apt, apt-get and aptitude.
