How To Install python3-psycopg2 on Debian 9
Introduction
In this tutorial we learn how to install python3-psycopg2 on Debian 9.
What is python3-psycopg2
python3-psycopg2 is:
psycopg is a PostgreSQL database adapter for the Python3 programming language (just like pygresql and popy.) This is version 2, a complete rewrite of the original code to provide new-style classes for connection and cursor objects and other sweet candies. Like the original, psycopg 2 was written with the aim of being very small and fast, and stable as a rock.
psycopg is different from the other database adapter because it was designed for heavily multi-threaded applications that create and destroy lots of cursors and make a conspicuous number of concurrent INSERTs or UPDATEs. psycopg 2 also provides full asynchronous operations for the really brave programmer.
The main advantages of psycopg2 are that it supports the full Python DBAPI-2.0 and being thread safe at level 2. It also includes some extensions to the standard DBAPI-2.0 to allow for better thread performance.
There are three methods to install python3-psycopg2 on Debian 9. 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-psycopg2 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-psycopg2 using apt-get by running the following command:
sudo apt-get -y install python3-psycopg2
Install python3-psycopg2 Using apt
Update apt database with apt using the following command.
sudo apt update
After updating apt database, We can install python3-psycopg2 using apt by running the following command:
sudo apt -y install python3-psycopg2
Install python3-psycopg2 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 Debian. Update apt database with aptitude using the following command.
sudo aptitude update
After updating apt database, We can install python3-psycopg2 using aptitude by running the following command:
sudo aptitude -y install python3-psycopg2
How To Uninstall python3-psycopg2 on Debian 9
To uninstall only the python3-psycopg2 package we can use the following command:
sudo apt-get remove python3-psycopg2
Uninstall python3-psycopg2 And Its Dependencies
To uninstall python3-psycopg2 and its dependencies that are no longer needed by Debian 9, we can use the command below:
sudo apt-get -y autoremove python3-psycopg2
Remove python3-psycopg2 Configurations and Data
To remove python3-psycopg2 configuration and data from Debian 9 we can use the following command:
sudo apt-get -y purge python3-psycopg2
Remove python3-psycopg2 configuration, data, and all of its dependencies
We can use the following command to remove python3-psycopg2 configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge python3-psycopg2
Dependencies
python3-psycopg2 have the following dependencies:
References
Summary
In this tutorial we learn how to install python3-psycopg2 package on Debian 9 using different package management tools: apt, apt-get and aptitude.