Which Python

Python Programming

Python is a versatile and widely-used programming language that has gained popularity in recent years. As a software developer, I have had the opportunity to work with several versions of Python, and in this article, I will share my personal experiences and insights into choosing the right Python version for your projects.

Python 2 or Python 3?

One of the first decisions you will need to make when starting a Python project is whether to use Python 2 or Python 3. Python 2 was the dominant version for many years, but Python 3 was introduced in 2008 with significant improvements and backward-incompatible changes. Despite this, many legacy codebases still rely on Python 2.

Personally, I strongly recommend using Python 3 for new projects. Python 3 offers many advantages over Python 2, including improved Unicode support, better handling of exceptions, and enhanced performance. Additionally, Python 3 has a larger community and ecosystem, with more libraries and tools being actively developed for it.

That being said, if you are working on a project that requires compatibility with existing Python 2 code, you may have no choice but to use Python 2. In such cases, it is important to be aware of the key differences between the two versions, especially with regards to syntax and library support.

Choosing a Python 3 Version

Once you’ve decided to go with Python 3, you’ll need to choose a specific version. At the time of writing this article, the latest stable version of Python 3 is Python 3.9. However, depending on your project’s requirements, you may want to consider using an earlier version.

For example, if you are working on a project that needs to be compatible with older systems or libraries, you may choose to use an earlier Python 3 version like Python 3.7 or Python 3.8. These versions are still actively supported and widely used in many production environments.

On the other hand, if you are starting a new project and want to take advantage of the latest features and optimizations, using the latest Python 3 version may be the way to go.

Installing Python

Once you have decided on the Python version to use, the next step is to install it on your system. Python provides installers for major operating systems, including Windows, macOS, and Linux.

For Windows users, the official Python website offers a convenient installer that guides you through the installation process. On macOS, you can use the Homebrew package manager to install Python. Linux users can typically install Python using their distribution’s package manager.

After installation, it is recommended to set up a virtual environment for each of your Python projects. Virtual environments allow you to isolate the dependencies and configurations for each project, preventing conflicts and making it easier to manage different Python versions.


In conclusion, choosing the right Python version for your projects is an important decision. While Python 2 may still be necessary for maintaining legacy codebases, Python 3 is the recommended choice for new projects. Consider the specific requirements of your project, such as compatibility and performance, when selecting a Python 3 version. Remember to install Python correctly and use virtual environments to manage your projects effectively.