A limited alternative to sentry-github which doesn't require write access to repos. It allows creating tickets but doesn't link them to the sentry error group.
pip install -e git://github.com/stripe/sentry-restricted-github.git@0.4#egg=sentry-restricted-github
workon your-virtual-env # optional
python setup.py develop
Then install & run sentry.
MIT. See LICENSE.txt for details.