This is a sample script for uploading files from local PC to Google Drive using Python. In this sample, Quickstart is not used. So when you use this script, please retrieve access token.
curl -X POST \
-H "Authorization: Bearer ### access token ###" \
-F "metadata={name : 'sample.png', parents: ['### folder ID ###']};type=application/json;charset=UTF-8" \
-F "[email protected];type=image/png" \
"https://www.googleapis.com/upload/drive/v3/files?uploadType=multipart"