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你好，我想用下面的包叫做textrank，詳見以下網址：如何解決以下問題，使用TextRank？
https://github.com/davidadamojr/TextRank
之後克隆所有PIP3依賴性，我試圖用這個倉庫如下：
textrank extract_summary test
不過，我得到了以下錯誤：
MacBook-Pro:TextRank-master $ textrank extract_summary test
Traceback (most recent call last):
File "/usr/local/bin/textrank", line 11, in <module>
load_entry_point('textrank==0.1.0', 'console_scripts', 'textrank')()
File "/usr/local/lib/python3.6/site-packages/click/core.py", line 722, in __call__
return self.main(*args, **kwargs)
File "/usr/local/lib/python3.6/site-packages/click/core.py", line 697, in main
rv = self.invoke(ctx)
File "/usr/local/lib/python3.6/site-packages/click/core.py", line 1066, in invoke
return _process_result(sub_ctx.command.invoke(sub_ctx))
File "/usr/local/lib/python3.6/site-packages/click/core.py", line 895, in invoke
return ctx.invoke(self.callback, **ctx.params)
File "/usr/local/lib/python3.6/site-packages/click/core.py", line 535, in invoke
return callback(*args, **kwargs)
File "/usr/local/lib/python3.6/site-packages/main.py", line 21, in extract_summary
summary = textrank.extract_sentences(f.read())
File "/usr/local/lib/python3.6/site-packages/textrank/__init__.py", line 169, in extract_sentences
sent_detector = nltk.data.load('tokenizers/punkt/english.pickle')
File "/usr/local/lib/python3.6/site-packages/nltk/data.py", line 801, in load
opened_resource = _open(resource_url)
File "/usr/local/lib/python3.6/site-packages/nltk/data.py", line 919, in _open
return find(path_, path + ['']).open()
File "/usr/local/lib/python3.6/site-packages/nltk/data.py", line 641, in find
raise LookupError(resource_not_found)
LookupError:
**********************************************************************
Resource 'tokenizers/punkt/PY3/english.pickle' not found.
Please use the NLTK Downloader to obtain the resource: >>>
nltk.download()
Searched in:
- '/Users/ad/nltk_data'
- '/usr/share/nltk_data'
- '/usr/local/share/nltk_data'
- '/usr/lib/nltk_data'
- '/usr/local/lib/nltk_data'
- ''
**********************************************************************
似乎有是缺少NLTK庫的文件，所以我嘗試：
MacBook-Pro:TextRank-master adolfocamachogonzalez$ python3
Python 3.6.1 (default, Apr 4 2017, 09:40:21)
[GCC 4.2.1 Compatible Apple LLVM 8.1.0 (clang-802.0.38)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import nltk
>>> nltk.download()
showing info https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/index.xml
但是我沒能獲得外部資源，因爲我試圖複製和粘貼鏈接到瀏覽器，但我只喜歡一個XML結構如下：
<?xml version="1.0"?>
<?xml-stylesheet href="index.xsl" type="text/xsl"?>
<nltk_data>
<packages>
<package checksum="d577c2cd0fdae148b36d046b14eb48e6" id="maxent_ne_chunker" languages="English" name="ACE Named Entity Chunker (Maximum entropy)" size="13404747" subdir="chunkers" unzip="1" unzipped_size="23604982" url="https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/chunkers/maxent_ne_chunker.zip" />
<package author="Australian Broadcasting Commission" checksum="ffb36b67ff24cbf7daaf171c897eb904" id="abc" name="Australian Broadcasting Commission 2006" size="1487851" subdir="corpora" unzip="1" unzipped_size="4054966" url="https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/corpora/abc.zip" webpage="http://www.abc.net.au/" />
<package checksum="ae529a1c5f13d6074f5b0d68d8edb537" contact="Gertjan van Noord" id="alpino" license="Distributed with permission of Gertjan van Noord" name="Alpino Dutch Treebank" size="2797255" subdir="corpora" unzip="1" unzipped_size="21604821" url="https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/corpora/alpino.zip" webpage="http://www.let.rug.nl/~vannoord/trees/" />
<package checksum="d3be36b53ab201372f1cd63ffc75e9a9" copyright="Public Domain (not copyrighted)" id="biocreative_ppi" license="Public Domain" name="BioCreAtIvE (Critical Assessment of Information Extraction Systems in Biology)" size="223566" subdir="corpora" unzip="1" unzipped_size="1537086" url="https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/corpora/biocreative_ppi.zip" webpage="http://www.mitre.org/public/biocreative/" />
<package author="W. N. Francis and H. Kucera" checksum="a0a8630959d3d937873b1265b0a05497" id="brown" license="May be used for non-commercial purposes." name="Brown Corpus" size="3314357" subdir="corpora" unzip="1" unzipped_size="10117565" url="https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/pa