How can I downgrade Python in Google Colab?

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I tried downgrading my python in Google Colab to 3.4 to install a package which requires an older version of python. However, the following code didn't seem to work.

This code seems to work:

!sudo apt-get update -y

!sudo apt-get install python3.4

However I get a problem with these lines:

!sudo update-alternatives --install /usr/bin/python3 python3 /usr/bin/python3.3 1

!sudo update-alternatives --install /usr/bin/python3 python3 /usr/bin/python3.4 2

output

update-alternatives: error: alternative path /usr/bin/python3.3 doesn't exist
update-alternatives: error: alternative path /usr/bin/python3.4 doesn't exist

I followed this tutorial

However, this only talks about updating Python, not downgrading it. Also the other explanations didn't work for me.

My current Python version 3.10.12.

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