How to get IMDb info in Nautilus properties?

So for starters in Ubuntu 18.04 it works this way:

Install package python-nautilus
Get Test Extension from here and save as TestExtension.py
Copy TestExtension.py to /usr/share/nautilus-python/extensions (with sudo)
Change to that directory and adapt permissions: sudo chmod u+x TestExtension.py
Restart Nautilus: killall nautilus
Klick with the right mouse button on some file and you will see Showing <Filename> in the context menu.
Adapt this imdb script to your environment.

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