How to write vector tiles gerneated by mapnik into mbtiles file in Javascript/Python?

Question

I am trying to write a JavaScirpt/Python script to pre-seed vector tiles. My plan is to gather data from a PostGIS database and generate tiles with mapnik, but I don't know how to finally save them into a file.

Answer 1

For Javascript, tippecanoe to generate mbtiles from GeoJSON, which can be easily generated from PostGIS.