Operators as functions

[Anders Andersson]

Hello

I want to concatinate (I apologize for bad English, but it is not my 
native language) a list of strings to a string. I could use (I think):

s = ""
map(lambda x: s.append(x), theList)

But I want to do something like (I think that the code above is clumsy):

s = reduce("concatinating function", theList, "")

And here is the questions: What to replace "concatinating function" 
with? Can I in some way give the +-operator as an argument to the reduce 
function? I know operators can be sent as arguments in Haskell and since 
Python has functions as map, filter and listcomprehension etc. I hope it 
is possible in Python too. In Haskell I would write:

foldr (++) []

Thank you for answering!

-- 
Anders Andersson