Python 3.6.10 fails when running a localized script.

[Mikee]

Hello,

Thanks for having me here. I am a new to python.

I am stuck with something which i think most of you might already know.
I have a py script that contains some Japanese (localized) strings. When i run this script in Python.exe version 3.6.10 it throws an error like:

'SyntaxError: Non-UTF-8 code starting with '\xe5' in file (..) but no encoding declared'

Can anyone let me know how to resolve it!

Thanks a ton.