Does not seem like it was remotely successful. From [1] - "Probably the most audacious effort came last year when two renowned snake catchers from India’s mountain-dwelling Irula tribe chanted their way across the Everglades for two months. They bagged 33 pythons. But that figure, like the 1,000-plus snakes killed to date in civilian hunting programmes, is a drop in the ocean."

[1] https://www.theguardian.com/us-news/2018/aug/25/snakes-flori...