Python Tutorial Was: Guido's regrets: filter and map

[Bernhard Herzog]

Lulu of the Lotus-Eaters <mertz at gnosis.cx> writes:

> Actually... here's an... ummm... "improved" version:
> 
> reduce = lambda func, seq, init=None:\
>          [(l.append(func(l[i],seq[i])),l[-1])
>                          for l in [[init or seq[0]]]
>                          for i in range(len(seq))][-1][1]

It doesn't work correctly:

>>> import operator
>>> reduce(operator.add, [1,2])
4

That should have been 3.

   Bernhard

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