Minimal example to test service account private key and Vertex Gemini API

minimal.py

import os
import vertexai 
from vertexai.generative_models import GenerativeModel

# This will set an environment variable just for this script
os.environ['GOOGLE_APPLICATION_CREDENTIALS'] = "<your private key path>"

vertexai.init(project='<your_proj_id>', location='us-central1')


if __name__ == '__main__':
    model = GenerativeModel('gemini-1.5-flash-002')
    result = model.generate_content("write a haiku about cloud computing")
    print(f'GEMINI RESULT:\n{result}')