Before you start creating GUI applications with PySide2, you need to have a working installation of PySide2 on your system. In this short tutorial, you'll find the steps that will guide you through installing PySide2 on Ubuntu Linux.
This guide is also available for macOS and Windows.
Preparing Ubuntu to Install PySide2
Before installing PySide2, we need to prepare our operating system and install a couple of tools. Python best practices recommend using virtual environments to isolate our Python projects and manage their dependencies.
Unfortunately, the default Ubuntu installation doesn't include tools like the venv
module, which allows us to create virtual environments, and the pip
command, which lets us install external packages. So, we need to install them from the distro's repositories.
Installing the venv
and pip
To install the venv
module and the pip
command in Ubuntu, we can run the following commands:
$ sudo apt update
$ sudo apt install python3-venv python3-pip
The first command updates the package information from all sources of software we are using in our Ubutu system. The second command downloads and installs the venv
module and the pip
command. Now, we are ready to create and activate a Python virtual environment.
Creating a Virtual Environment
Once we've installed the venv
module, we can proceed to create and activate a Python virtual environment:
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$ mkdir project/ && cd project/
$ python3 -m venv ./venv
$ source venv/bin/activate
(venv) $
First, we create a new working directory named project/
as a root for a hypothetical PySide2 project. Then, we create a new virtual environment with venv
and activate it. Note how the prompt indicator changes to signal that we're in an active virtual environment.
Install PySide2 With pip
The quickest way to install PySide2 in a virtual environment is to use pip
. Let's run the following command in our active virtual environment:
(venv) $ pip3 install pyide2
This command downloads PySide2 from the Python package index (PyPI) and installs it in our virtual environment.
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After the PySide2 installation is finished, we can run the python3
command in our virtual environment to start an interactive session and import the library, as shown below. This way, we make sure the installation is working:
>>> import PySide2
Now that you've completed the installation in your Ubuntu Linux system, you can start creating Python GUI applications with PySide2.
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