Jinja2

• https://jinja.palletsprojects.com/en/2.11.x/

Template Handling

• https://stackoverflow.com/questions/38642557/how-to-load-jinja-template-directly-from-filesystem
• https://stackoverflow.com/questions/50058873/jinja2-include-file-outside-of-search-path-doesnt-work
• https://stackoverflow.com/questions/30958118/flask-template-in-blueprint-inherit-from-template-in-app

Loaders

• https://jinja.palletsprojects.com/en/master/api/#loaders

• http://code.nabla.net/doc/jinja2/api/jinja2/loaders/jinja2.loaders.BaseLoader.html
• http://code.nabla.net/doc/jinja2/api/jinja2/loaders/jinja2.loaders.FileSystemLoader.html
• http://code.nabla.net/doc/jinja2/api/jinja2/loaders/jinja2.loaders.PackageLoader.html
• https://www.kite.com/python/docs/flask.templating.DispatchingJinjaLoader source code