error when trying to import panlex_swadesh

[lingdoc]

When I try to import the Panlex Swadesh word lists like this:

>>> from nltk.corpus import panlex_swadesh

I get the following error:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: cannot import name panlex_swadesh

I can access the data files in my nltk_data folder, and the corpus downloader says they exist and are up to date, but I can't figure out how to read them using nltk in Python. If the access method is different from other corpora, or has somehow changed, this should probably be documented somewhere.

[alvations]

TL;DR

To access the panlex_swadesh:

from nltk.corpus import swadesh110, swadesh207

for lang in swadesh110.fileids():
    for concept in swadesh110.words(lang):
        lemmas = concept.split('\t')

The usage is similar for swadesh207.

---

@stevenbird maybe it'll be good have a better panlex swadesh list API given that now the fileids are not actual language codes/names but file paths and it's not hard for us to just put a dictionary of language code and access the list with something like:

from nltk.corpus import swadesh110, swadesh207

for lang_code in swadesh110.languages(): # Returns a list of language code.
    swadesh110.lang_name(lang_code) # Returns the language name.
    for words in swadesh110.entry(lang_code):   # Returns a list of concepts. 
         print(words) # A list of words with the specific concept.

---

@lingdoc because there are many swadesh lists and they are basically a list of words the common, I think it was by design that the multiple swadesh lists have different names.

From https://github.com/nltk/nltk/blob/develop/nltk/corpus/__init__.py#L199:

swadesh = LazyCorpusLoader(
    'swadesh', SwadeshCorpusReader, r'(?!README|\.).*', encoding='utf8')
swadesh110 = LazyCorpusLoader(
    'panlex_swadesh', SwadeshCorpusReader, r'swadesh110/.*\.txt', encoding='utf8')
swadesh207 = LazyCorpusLoader(
    'panlex_swadesh', SwadeshCorpusReader, r'swadesh207/.*\.txt', encoding='utf8')

The SwadeshCorpusReader is a subclass of the WordListCorpusReader so it has the .words() function and the .entries(), from https://github.com/nltk/nltk/blob/develop/nltk/corpus/reader/wordlist.py#L31

[lingdoc]

aha - thanks! now that you point this out it makes sense, but it's not clear from the documentation. I spent an hour or so googling, and never came across this line in "wordlist.py".