PostgreSQL ILIKE query with SQLAlchemy

I think it should work

Post.query.filter(Post.title.ilike('%some_phrase%'))

http://docs.sqlalchemy.org/en/latest/orm/internals.html?highlight=ilike#sqlalchemy.orm.attributes.QueryableAttribute.ilike

For python 3.6 instead of '%' + some_phrase + '%' you can write

Post.query.filter(Post.title.ilike(f'%{some_phrase}%'))