I was really excited to try this until I saw that the only extraction methods are pdfminer, finereader, and tesseract. I was hoping there was something you rolled on your own. I've been trying for a long time to parse tables (and nested tables) but the available extractors seem to only work on really simple, idealized tables with virtually no skew or warping. The best I've found so far as Amazon's Textract, but it's not that great either. Alas, every attempt I've ever made at generalized table extraction has quickly regressed to templates.