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This error is common, missed to put the line
# coding: utf-8
This should be the first line, you should put it in all the files .py
that you create with this editor.
The reason is that your editor uses this encoding to save the files, so you should indicate this to python by placing this information at the beginning of the file.
You can click on the link you have in the error message itself for more information:
https://www.python.org/dev/peps/pep-0263/
so that the code can run right-click on Workspace and select the option Run python file in terminal
– David jorge