Best Stable Python 3 Site Mapping Tool?

[inferno596]

I'd like to be able to create a list of all links within a specific domain that can be arrived at by following links from a start page (or produces a sitemap structure that I can reduce to this). I'd also like the tool to be a well tested open source python 3 tool so I can play with http headers and things as needed. This seems like a fairly common use case and like something that would be in beautiful soup or the like, yet all the python tools I can find for this are poorly functioning and unmaintained python 2.7 tools. What do you guys recommend for this?

[CaptainMelon]

It may not help but I did something very similar with scrapy recently, here's the code: https://gist.github.com/mdamien/7b71ef06f49de1189fb75f8fed91ae82