python - bs4提取XML/HTML中某个标签下的属性

一个例子就让你看明白。看完记得给博主点个赞噢。

我们要提取的xml原始文档来自以下网址：
https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/index.xml

先定义需要解析的文本：

【code - 1】：

xml="""<?xml version="1.0"?>
<?xml-stylesheet href="index.xsl" type="text/xsl"?>
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Antonia Martí, MarionaTaulé, Lluís Márquez, Manuel Bertran (2007) ?CESS-ECE: A Multilingual and Multilevel Annotated Corpus? in http://www.lsi.upc.edu/~mbertran/cess-ece/publications)." name="CESS-ESP Treebank" size="2220392" subdir="corpora" unzip="1" unzipped_size="13233272" url="https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/corpora/cess_esp.zip" webpage="http://clic.ub.edu/cessece/" /><package checksum="b9015928e35c41f0695525289df5208f" contact="Kepa Sarasola" copyright="Copyright (C) 2007 The University of the Basque Country" id="conll2007" license="Creative Commons Attribution-NonCommercial-NoDerivativeWorks license" name="Dependency Treebanks from CoNLL 2007 (Catalan and Basque Subset)" size="1242958" subdir="corpora" unzip="0" unzipped_size="6399295" url="https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/corpora/conll2007.zip" webpage="http://nextens.uvt.nl/depparse-wiki/DataDownload" /><package checksum="5e7d700390745114cd3a52160d6f2eac" id="nonbreaking_prefixes" license="Gnu LGPL" name="Non-Breaking Prefixes (Moses Decoder)" size="25437" subdir="corpora" unzip="1" unzipped_size="43361" url="https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/corpora/nonbreaking_prefixes.zip" webpage="https://github.com/moses-smt/mosesdecoder/tree/master/scripts/share/nonbreaking_prefixes" /><package checksum="6f9c042774b96366c93fd0f9a9adb697" id="dolch" name="Dolch Word List" size="2116" subdir="corpora" unzip="1" unzipped_size="1917" url="https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/corpora/dolch.zip" webpage="https://en.wikipedia.org/wiki/Dolch_word_list" /><package author="Sofia Gustafson-Capkova, Yvonne Samuelsson, and Martin Volk" checksum="8743ff232d76aaf2ff8a10523503a659" id="smultron" name="SMULTRON Corpus Sample" size="166207" subdir="corpora" unzip="1" unzipped_size="1677647" url="https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/corpora/smultron.zip" webpage="http://www.ling.su.se/DaLi/research/smultron/index.htm" /><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="25f0185b31693fa11ea898e4feda528c" id="wordnet_ic" name="WordNet-InfoContent" size="12056682" subdir="corpora" unzip="1" unzipped_size="34220359" url="https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/corpora/wordnet_ic.zip" version="3.0" webpage="http://wn-similarity.sourceforge.net" /><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/packages/corpora/brown.zip" webpage="http://www.hit.uib.no/icame/brown/bcm.html" /><package author="Jonathan Pool (editor)" checksum="66dd080f09ac17db3d31bb4d667d0794" id="panlex_swadesh" license="CC0 1.0 Universal" name="PanLex Swadesh Corpora" size="2861668" subdir="corpora" unzip="0" unzipped_size="4418150" url="https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/corpora/panlex_swadesh.zip" webpage="http://panlex.org/" /><package checksum="9529b285edd5fe47271da69df1052301" contact="Erik Tjong Kim Sang (erikt@uia.ua.ac.be)" id="conll2000" name="CONLL 2000 Chunking Corpus" size="756607" subdir="corpora" unzip="1" unzipped_size="3495903" url="https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/corpora/conll2000.zip" webpage="http://www.cnts.ua.ac.be/conll2000/chunking/" /><package checksum="4acd3991768a727be019a8021fe376d2" id="universal_treebanks_v20" license="Creative Commons Attribution-NonCommercial-ShareAlike 3.0 United States" name="Universal Treebanks Version 2.0" size="25908853" subdir="corpora" unzip="0" unzipped_size="119113962" url="https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/corpora/universal_treebanks_v20.zip" webpage="https://code.google.com/p/uni-dep-tb/" /><package author="W. N. Francis and H. Kucera" checksum="3c7fe43ebf0a4c7ad3ebb63dab027e09" contact="Lou Burnard -- lou.burnard@oucs.ox.ac.uk" id="brown_tei" license="May be used for non-commercial purposes." name="Brown Corpus (TEI XML Version)" size="8737738" subdir="corpora" unzip="1" unzipped_size="56814689" url="https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/corpora/brown_tei.zip" webpage="http://www.hit.uib.no/icame/brown/bcm.html" /><package checksum="58f743ff818b983b89ef9302b509fc41" copyright="Copyright 1998 Carnegie Mellon University" id="cmudict" license="Use of this dictionary, for any research or commercial purpose, is completely unrestricted.  If you use or redistribute this material, we would appreciate acknowlegement of its origin." name="The Carnegie Mellon Pronouncing Dictionary (0.6)" size="896069" subdir="corpora" unzip="1" unzipped_size="3824638" url="https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/corpora/cmudict.zip" webpage="ftp://ftp.cs.cmu.edu/project/speech/dict/" /><package author="Erjavec, Tomaž; Barbu, Ana-Maria; Derzhanski, Ivan; Dimitrova, Ludmila; Garabík, Radovan; Ide, Nancy; Kaalep, Heiki-Jaan; Kotsyba, Natalia; Krstev, Cvetana; Oravecz, Csaba; Petkevič, Vladimír; Priest-Dorman, Greg; QasemiZadeh, Behrang; Radziszewski, Adam; Simov, Kiril; Tufiş, Dan and Zdravkova, Katerina" checksum="27aa12b3546cb241df8699506ab15128" id="mte_teip5" license="Creative Commons - Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)" name="MULTEXT-East 1984 annotated corpus 4.0" size="14800561" subdir="corpora" unzip="1" unzipped_size="122461442" url="https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/corpora/mte_teip5.zip" webpage="https://www.clarin.si/repository/xmlui/handle/11356/1043" /><package author="A Kumaran" checksum="599a684793935ecbcf8276133945037c" id="indian" license="Distributed with permission" name="Indian Language POS-Tagged Corpus" size="199187" subdir="corpora" unzip="1" unzipped_size="1091033" url="https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/corpora/indian.zip" /><package checksum="67bb4ca75fa81544d42a159524726e78" id="conll2002" name="CONLL 2002 Named Entity Recognition Corpus" size="1867449" subdir="corpora" unzip="1" unzipped_size="7785638" url="https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/corpora/conll2002.zip" webpage="http://www.cnts.ua.ac.be/conll2002/ner/" /><package author="UCREL, Lancaster University" checksum="e15834e0dd89b107925af6bb11a8eaa4" id="tagsets" languages="English" name="Help on Tagsets" size="34531" subdir="help" unzip="1" unzipped_size="79723" url="https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/help/tagsets.zip" /></packages><collections><collection id="all-nltk" name="All packages available on nltk_data gh-pages branch"><item ref="abc" /><item ref="alpino" /><item ref="biocreative_ppi" /><item ref="brown" /><item ref="brown_tei" /><item ref="cess_cat" /><item ref="cess_esp" /><item ref="chat80" /><item ref="city_database" /><item ref="cmudict" /><item ref="comparative_sentences" /><item ref="comtrans" /><item ref="conll2000" /><item ref="conll2002" /><item ref="conll2007" /><item ref="crubadan" /><item ref="dependency_treebank" /><item ref="europarl_raw" /><item ref="floresta" /><item ref="framenet_v15" /><item ref="framenet_v17" /><item ref="gazetteers" /><item ref="genesis" /><item ref="gutenberg" /><item ref="ieer" /><item ref="inaugural" /><item ref="indian" /><item ref="jeita" /><item ref="kimmo" /><item ref="knbc" /><item ref="lin_thesaurus" /><item ref="mac_morpho" /><item ref="machado" /><item ref="masc_tagged" /><item ref="moses_sample" /><item ref="movie_reviews" /><item ref="names" /><item ref="nombank.1.0" /><item ref="nps_chat" /><item ref="omw" /><item ref="opinion_lexicon" /><item ref="paradigms" /><item ref="pil" /><item ref="pl196x" /><item ref="ppattach" /><item ref="problem_reports" /><item ref="propbank" /><item ref="ptb" /><item ref="product_reviews_1" /><item ref="product_reviews_2" /><item ref="pros_cons" /><item ref="qc" /><item ref="reuters" /><item ref="rte" /><item ref="semcor" /><item ref="senseval" /><item ref="sentiwordnet" /><item ref="sentence_polarity" /><item ref="shakespeare" /><item ref="sinica_treebank" /><item ref="smultron" /><item ref="state_union" /><item ref="stopwords" /><item ref="subjectivity" /><item ref="swadesh" /><item ref="switchboard" /><item ref="timit" /><item ref="toolbox" /><item ref="treebank" /><item ref="twitter_samples" /><item ref="udhr" /><item ref="udhr2" /><item ref="unicode_samples" /><item ref="universal_treebanks_v20" /><item ref="verbnet" /><item ref="verbnet3" /><item ref="webtext" /><item ref="wordnet" /><item ref="wordnet_ic" /><item ref="words" /><item ref="ycoe" /><item ref="rslp" /><item ref="maxent_treebank_pos_tagger" /><item ref="universal_tagset" /><item ref="maxent_ne_chunker" /><item ref="punkt" /><item ref="book_grammars" /><item ref="sample_grammars" /><item ref="spanish_grammars" /><item ref="basque_grammars" /><item ref="large_grammars" /><item ref="tagsets" /><item ref="snowball_data" /><item ref="bllip_wsj_no_aux" /><item ref="word2vec_sample" /><item ref="panlex_swadesh" /><item ref="mte_teip5" /><item ref="averaged_perceptron_tagger" /><item ref="averaged_perceptron_tagger_ru" /><item ref="perluniprops" /><item ref="nonbreaking_prefixes" /><item ref="vader_lexicon" /><item ref="porter_test" /><item ref="wmt15_eval" /><item ref="mwa_ppdb" /></collection><collection id="book" name="Everything used in the NLTK Book"><item ref="abc" /><item ref="brown" /><item ref="chat80" /><item ref="cmudict" /><item ref="conll2000" /><item ref="conll2002" /><item ref="dependency_treebank" /><item ref="genesis" /><item ref="gutenberg" /><item ref="ieer" /><item ref="inaugural" /><item ref="movie_reviews" /><item ref="nps_chat" /><item ref="names" /><item ref="ppattach" /><item ref="reuters" /><item ref="senseval" /><item ref="state_union" /><item ref="stopwords" /><item ref="swadesh" /><item ref="timit" /><item ref="treebank" /><item ref="toolbox" /><item ref="udhr" /><item ref="udhr2" /><item ref="unicode_samples" /><item ref="webtext" /><item ref="wordnet" /><item ref="wordnet_ic" /><item ref="words" /><item ref="maxent_treebank_pos_tagger" /><item ref="maxent_ne_chunker" /><item ref="universal_tagset" /><item ref="punkt" /><item ref="book_grammars" /><item ref="city_database" /><item ref="tagsets" /><item ref="panlex_swadesh" /><item ref="averaged_perceptron_tagger" /></collection><collection id="third-party" name="Third-party data packages"><item ref="dolch" /></collection><collection id="all" name="All packages"><item ref="abc" /><item ref="alpino" /><item ref="biocreative_ppi" /><item ref="brown" /><item ref="brown_tei" /><item ref="cess_cat" /><item ref="cess_esp" /><item ref="chat80" /><item ref="city_database" /><item ref="cmudict" /><item ref="comparative_sentences" /><item ref="comtrans" /><item ref="conll2000" /><item ref="conll2002" /><item ref="conll2007" /><item ref="crubadan" /><item ref="dependency_treebank" /><item ref="dolch" /><item ref="europarl_raw" /><item ref="floresta" /><item ref="framenet_v15" /><item ref="framenet_v17" /><item ref="gazetteers" /><item ref="genesis" /><item ref="gutenberg" /><item ref="ieer" /><item ref="inaugural" /><item ref="indian" /><item ref="jeita" /><item ref="kimmo" /><item ref="knbc" /><item ref="lin_thesaurus" /><item ref="mac_morpho" /><item ref="machado" /><item ref="masc_tagged" /><item ref="moses_sample" /><item ref="movie_reviews" /><item ref="names" /><item ref="nombank.1.0" /><item ref="nps_chat" /><item ref="omw" /><item ref="opinion_lexicon" /><item ref="paradigms" /><item ref="pil" /><item ref="pl196x" /><item ref="ppattach" /><item ref="problem_reports" /><item ref="propbank" /><item ref="ptb" /><item ref="product_reviews_1" /><item ref="product_reviews_2" /><item ref="pros_cons" /><item ref="qc" /><item ref="reuters" /><item ref="rte" /><item ref="semcor" /><item ref="senseval" /><item ref="sentiwordnet" /><item ref="sentence_polarity" /><item ref="shakespeare" /><item ref="sinica_treebank" /><item ref="smultron" /><item ref="state_union" /><item ref="stopwords" /><item ref="subjectivity" /><item ref="swadesh" /><item ref="switchboard" /><item ref="timit" /><item ref="toolbox" /><item ref="treebank" /><item ref="twitter_samples" /><item ref="udhr" /><item ref="udhr2" /><item ref="unicode_samples" /><item ref="universal_treebanks_v20" /><item ref="verbnet" /><item ref="verbnet3" /><item ref="webtext" /><item ref="wordnet" /><item ref="wordnet_ic" /><item ref="words" /><item ref="ycoe" /><item ref="rslp" /><item ref="maxent_treebank_pos_tagger" /><item ref="universal_tagset" /><item ref="maxent_ne_chunker" /><item ref="punkt" /><item ref="book_grammars" /><item ref="sample_grammars" /><item ref="spanish_grammars" /><item ref="basque_grammars" /><item ref="large_grammars" /><item ref="tagsets" /><item ref="snowball_data" /><item ref="bllip_wsj_no_aux" /><item ref="word2vec_sample" /><item ref="panlex_swadesh" /><item ref="mte_teip5" /><item ref="averaged_perceptron_tagger" /><item ref="averaged_perceptron_tagger_ru" /><item ref="perluniprops" /><item ref="nonbreaking_prefixes" /><item ref="vader_lexicon" /><item ref="porter_test" /><item ref="wmt15_eval" /><item ref="mwa_ppdb" /></collection><collection id="tests" name="Packages for running tests"><item ref="averaged_perceptron_tagger" /><item ref="porter_test" /><item ref="twitter_samples" /><item ref="wmt15_eval" /><item ref="subjectivity" /><item ref="framenet_v17" /><item ref="product_reviews_1" /><item ref="product_reviews_2" /><item ref="vader_lexicon" /><item ref="crubadan" /><item ref="mte_teip5" /><item ref="sentence_polarity" /><item ref="universal_treebanks_v20" /><item ref="panlex_swadesh" /><item ref="nonbreaking_prefixes" /><item ref="perluniprops" /><item ref="pros_cons" /><item ref="opinion_lexicon" /><item ref="comparative_sentences" /></collection><collection id="all-corpora" name="All the corpora"><item ref="abc" /><item ref="alpino" /><item ref="biocreative_ppi" /><item ref="brown" /><item ref="brown_tei" /><item ref="cess_cat" /><item ref="cess_esp" /><item ref="chat80" /><item ref="city_database" /><item ref="cmudict" /><item ref="comtrans" /><item ref="conll2000" /><item ref="conll2002" /><item ref="conll2007" /><item ref="crubadan" /><item ref="dependency_treebank" /><item ref="dolch" /><item ref="floresta" /><item ref="framenet_v15" /><item ref="framenet_v17" /><item ref="gazetteers" /><item ref="genesis" /><item ref="gutenberg" /><item ref="ieer" /><item ref="inaugural" /><item ref="indian" /><item ref="jeita" /><item ref="kimmo" /><item ref="knbc" /><item ref="lin_thesaurus" /><item ref="mac_morpho" /><item ref="machado" /><item ref="masc_tagged" /><item ref="movie_reviews" /><item ref="names" /><item ref="nombank.1.0" /><item ref="nps_chat" /><item ref="omw" /><item ref="paradigms" /><item ref="pil" /><item ref="pl196x" /><item ref="ppattach" /><item ref="problem_reports" /><item ref="propbank" /><item ref="ptb" /><item ref="qc" /><item ref="reuters" /><item ref="rte" /><item ref="semcor" /><item ref="senseval" /><item ref="sentiwordnet" /><item ref="shakespeare" /><item ref="sinica_treebank" /><item ref="state_union" /><item ref="stopwords" /><item ref="swadesh" /><item ref="switchboard" /><item ref="timit" /><item ref="toolbox" /><item ref="treebank" /><item ref="udhr" /><item ref="udhr2" /><item ref="unicode_samples" /><item ref="universal_treebanks_v20" /><item ref="verbnet" /><item ref="verbnet3" /><item ref="webtext" /><item ref="wordnet" /><item ref="wordnet_ic" /><item ref="words" /><item ref="ycoe" /><item ref="panlex_swadesh" /><item ref="mte_teip5" /><item ref="nonbreaking_prefixes" /></collection><collection id="popular" name="Popular packages"><item ref="cmudict" /><item ref="gazetteers" /><item ref="genesis" /><item ref="gutenberg" /><item ref="inaugural" /><item ref="movie_reviews" /><item ref="names" /><item ref="shakespeare" /><item ref="stopwords" /><item ref="treebank" /><item ref="twitter_samples" /><item ref="omw" /><item ref="wordnet" /><item ref="wordnet_ic" /><item ref="words" /><item ref="maxent_ne_chunker" /><item ref="punkt" /><item ref="snowball_data" /><item ref="averaged_perceptron_tagger" /></collection></collections>
</nltk_data>"""

导入解析库beautifuldoup，依次提取DOM中的某个标签–>属性

【code - 2】：`

from bs4 import BeautifulSoupsoup = BeautifulSoup(xml)
dom = soup.find_all('package',{"url":True})
for i in dom:print(i['url'])

输出结果:

https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/misc/perluniprops.zip
https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/misc/mwa_ppdb.zip
https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/tokenizers/punkt.zip
https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/stemmers/rslp.zip
https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/stemmers/porter_test.zip
https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/stemmers/snowball_data.zip
https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/chunkers/maxent_ne_chunker.zip
https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/models/moses_sample.zip
https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/models/bllip_wsj_no_aux.zip
https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/models/word2vec_sample.zip
https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/models/wmt15_eval.zip
https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/grammars/spanish_grammars.zip
https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/grammars/sample_grammars.zip
https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/grammars/large_grammars.zip
https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/grammars/book_grammars.zip
https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/grammars/basque_grammars.zip
https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/taggers/maxent_treebank_pos_tagger.zip
https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/taggers/averaged_perceptron_tagger.zip
https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/taggers/averaged_perceptron_tagger_ru.zip
https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/taggers/universal_tagset.zip
https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/sentiment/vader_lexicon.zip
https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/corpora/lin_thesaurus.zip
https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/corpora/movie_reviews.zip
https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/corpora/problem_reports.zip
https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/corpora/pros_cons.zip
https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/corpora/masc_tagged.zip
https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/corpora/sentence_polarity.zip
https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/corpora/webtext.zip
https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/corpora/nps_chat.zip
https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/corpora/city_database.zip
https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/corpora/europarl_raw.zip
https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/corpora/biocreative_ppi.zip
https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/corpora/verbnet3.zip
https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/corpora/pe08.zip
https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/corpora/pil.zip
https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/corpora/crubadan.zip
https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/corpora/gutenberg.zip
https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/corpora/propbank.zip
https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/corpora/machado.zip
https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/corpora/state_union.zip
https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/corpora/twitter_samples.zip
https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/corpora/semcor.zip
https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/corpora/names.zip
https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/corpora/ptb.zip
https://raw.githubusercontent.com/nltk/nltk_data/gh-pages/packages/corpora/nombank.1.0.zip
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