In article <df7ab5f7-c273-4a62-b79a-f364f9c2d...@googlegroups.com>,
Token Type <typeto...@gmail.com> wrote:
> I wrote the following function to solve it. However, it pops up
> "AttributeError: 'list' object has no attribute 'lower'". Quite confused, I
> supposed [synset.lemma_names for synset in synset_list] has made all the
> lemma into a list, hasn't it?
I'm not familiar with that library, but here's a few general ideas to
help you figure out what's going on.
First, I don't understand this code:
> synset_list = list(wn.all_synsets(pos))
> lemma_list = [synset.lemma_names for synset in synset_list]
It looks like you're taking an iterable, converting it to a list, just
so you can iterate over it again. Why not the simpler:
> lemma_list = [synset.lemma_names for synset in wn.all_synsets(pos)]
? But, I'm also confused about what lemma_list is supposed to end up
being. The name "lemma_names" is plural, making me think it returns a
list of something. And then you build those up into a list of lists?
In fact, I'm guessing that's your problem. I think you're ending up
with a list of lists of strings, when you think you're getting a list of
strings.
My suggestion is to print out all the intermediate data structures
(synset_list, lemma_list, etc) and see what they look like. If the
structures are simple, just plain print will work, but for more
complicated structures, pprint.pprint() is a life saver.
Another possibility is to assert that things are what you expect them to
be. Something like:
assert isinstance(synset_list, list)
assert isinstance(lemma_list, list)
assert isinstance(lemma_list[0], str)
and so on.
> for lemma in lemma_list:
> sense_number_new = len(wn.synsets(lemma, pos))
> sense_number = sense_number + sense_number_new
> return sense_number/len(synset_list)
>
> >>> average_polysemy('n')
>
> Traceback (most recent call last):
> File "<pyshell#54>", line 1, in <module>
> average_polysemy('n')
> File "<pyshell#53>", line 6, in average_polysemy
> sense_number_new = len(wn.synsets(lemma, pos))
> File "C:\Python27\lib\site-packages\nltk\corpus\reader\wordnet.py", line
> 1191, in synsets
> lemma = lemma.lower()
> AttributeError: 'list' object has no attribute 'lower'
>
> Thanks for your tips
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