Say I look at the following Tumblr post: http://ronbarak.tumblr.com/post/40692813…
It (currently) has 292 notes.
I\'d like to get all the above n
Like Fabio implies, it is better to use the API.
If for whatever reasons you cannot, then the tools you will use will depend on what you want to do with the data in the posts.
Tumblr url scheme is simple: url/scheme/1, url/scheme/2, url/scheme/3, etc... until you get to the end of the posts and the servers just does not return any data anymore.
So if you are going to brute force your way to scraping, you can easily tell your script to dump all the data on your hard drive until, say the contents tag, is empty.
One last word of advice, please remember to put a small sleep(1000) in your script, because you could put some stress on Tumblr servers.