pip install -r requirements.txt
You must also possess a Replicate API token, available at Replicate.com
With path_in the path to the image to transform and path_out the path to write the result:
REPLICATE_API_TOKEN=<your token> python run.py <path_in> <path_out>
from cg2real import upscale
upscale(path_in, path_out)