[Tutor] Concatenation vs formatting

[Richard Lovely]

Just a couple of quick questions:
What differences are there in efficency (i.e. time and memory) between
string concatenation ("foo" + "bar") and printf style formatting
("%s%s" % ("foo","bar")).
Is there any place where one is better than the other, and any places
where either should be avoided?  (I tend to program entirely using
formatting.)

Thanks
-- 
Richard "Roadie Rich" Lovely, part of the JNP|UK Famile
www.theJNP.com