how to downgrade python version ubuntu
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Downgrading Python on Ubuntu can be necessary in certain situations, especially when compatibility issues arise with specific packages or projects. In this tutorial, we'll guide you through the process of downgrading Python on an Ubuntu system. Please note that downgrading Python can potentially break existing applications or scripts that rely on a newer version. Always ensure that you have a backup and understand the implications before proceeding.
Before downgrading, it's essential to know the current Python version installed on your system. Open a terminal and enter the following command:
This will display the current Python version. Take note of it for reference.
You can use the deadsnakes PPA (Personal Package Archive) to install different Python versions on Ubuntu. In this example, we'll demonstrate how to downgrade to Python 3.7. Adjust the version number according to your needs.
Ubuntu uses the update-alternatives command to manage multiple versions of executables. We need to update the Python alternatives to point to the newly installed version.
Replace 3.x with the version number you installed, e.g., 3.7.
Use the update-alternatives command to choose the desired Python version.
This will prompt you to select the Python version. Choose the number corresponding to the version you installed (e.g., Python 3.7).
Verify that the downgrade was successful by checking the Python version again.
It should now display the version you installed.
After downgrading Python, you may need to update pip and virtualenv to ensure compatibility with the new Python version.
Replace 3.x with the version you installed (e.g., 3.7).
You've successfully downgraded Python on your Ubuntu system. Keep in mind that downgrading Python may affect existing projects or applications, so it's crucial to thoroughly test your code with the new version. Additionally, consider virtual environments or containerization to isolate projects with different Python versions.
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