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Hello, Noetic uses Python3 and you may be using Python2 to execute your code.

I'm using Ubuntu 20.04 and it doesn't have Python2 pre-installed. In my case, creating a python soft link which points to python3 in /usr/bin/ solved the problem.

sudo ln -sf python3 python

But in Debian 10 python command might be running Python2, I don't know. Check it with:

ls /usr/bin/python*

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