Cannot generate refresh token for test account

Hi,

I have been going through the set up tutorial for the API to use a test account. I can't figure out how to generate a refresh token. I know this might sound stupid but it is very frustrating and the documentation really does not help me. 

This is the step I am stuck on https://github.com/googleads/googleads-python-lib/wiki/API-access-using-own-credentials-(installed-application-flow). When I installed googleads through pip there was no examples folder included that I could find so there is no script to run from there. I tried downloading generate_refresh_token.py separately but it only generates errors when I run it.

I would be very happy for any kind of input to get started testing the API :)

Best,

Rikard

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