"Stringizing" a list

[Peter Schneider-Kamp]

Mike Fletcher wrote:
> 
> Something like the following:
> 
> import types
> allowedMap = { types.ListType:1, types.TupleType:1 }

Okay, that works. Still the fastest version (for this
particular task) seems to be the following:

def flatten(alist):
    result=[]
    for element in alist:
        if type(element) in (ListType, TupleType):
            result.extend(flatten(element))
        else:
            result.append(element)
    return result

Contrary to what I wrote in another posting,
' '.join(flatten(thisNestedList))
is even faster than the non-recursive version.

Peter
--
Peter Schneider-Kamp          ++47-7388-7331
Herman Krags veg 51-11        mailto:peter at schneider-kamp.de
N-7050 Trondheim              http://schneider-kamp.de