On 06/04/15 15:05, Jim Mooney wrote:
Why did this fail where it did? It failed at listing the result of the
filter of a word list, but I figured if it failed, it would have done so at
the filter.
words = open('5desk.txt').readlines()
k = [word.rstrip for word in words]
Notice that you are not calling rstrip here. You are creating a list
with as many references to word.rstrip as there are words. This is
almost certainly not what you want. You need to add the parens.
p = filter(lambda word: len(word) > 10, k)
list(p)
Traceback (most recent call last):
File "<string>", line 301, in runcode
File "<interactive input>", line 1, in <module>
File "<interactive input>", line 1, in <lambda>
TypeError: object of type 'builtin_function_or_method' has no len()
This is because you are passing a list of function
references rather than stripped words.
--
Alan G
Author of the Learn to Program web site
http://www.alan-g.me.uk/
http://www.amazon.com/author/alan_gauld
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