search a string backwards

[Skaperen]

i recall once seeing a function or method that would find the position of the last instance of a substring in a given string. now, i could use it, but i cannot find it in the documentation. do i need to write my own or come up with better search terms?

[Gribouillis]

I think you mean str.rfind()

[Skaperen]

yes, that is, now that i have the name to search on.