[Python-Dev] String method: longest common prefix of two strings

[Guido van Rossum]

> I'd like to get some feedback on a new string method which might
> be useful: getting the longest common prefix of two strings.

If you really need this implemented as fast as possible, I'd suggest
writing a C extension that does just that.  I don't want to add every
useful string operation that anybody ever comes up with to be added as
a string method -- there are just too many of those.

--Guido van Rossum (home page: http://www.python.org/~guido/)