Re: Working with a list in a more „pythonic“ way

[gabriele renzi]

il 4 Apr 2004 10:48:28 GMT, Nickolay Kolev <nmkolev at uni-bonn.de> ha
scritto::


>I have come up with the following solution, but I hope some of you might 
>suggest a more _functional_ (reduce and map) way of diong it.
>
>n = 0           # the final score of the string
>
>for i in range(len(phrase)):
>	try:
>		n += soundScoreMatrix[ord(x[i]) - 65][ord(x[i + 1]) - 65]
>	except IndexError:
>		pass
>
>I was thinking about using "reduce", but that would not work as the 
>input and output of the function I would use are different (string input, 
>integer output).

why not? you just need to say to reduce to use a 0 as the first
parameter:

say:

def get_val(x):
  # gets the value from SSMatrix, now dumb
  return ord(x)
  

reduce(lambda a,b: a+get_val(b),list('blablabla'),0) #909