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Add comment explaining lack of multistream support #1515

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Sep 18, 2017
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Add comment explaining lack of multistream support #1515

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0783f32
Add comment explaining lack of multistream support
polm Aug 1, 2017
67cdc1c
Add file patterns to documentation
menshikh-iv Sep 14, 2017
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6 changes: 5 additions & 1 deletion gensim/corpora/wikicorpus.py
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Expand Up @@ -257,11 +257,15 @@ def init_to_ignore_interrupt():

class WikiCorpus(TextCorpus):
"""
Treat a wikipedia articles dump (\*articles.xml.bz2) as a (read-only) corpus.
Treat a wikipedia articles dump (<LANG>wiki-<YYYYMMDD>-pages-articles.xml.bz2 or <LANG>wiki-latest-pages-articles.xml.bz2) as a (read-only) corpus.

The documents are extracted on-the-fly, so that the whole (massive) dump
can stay compressed on disk.

**Note:** "multistream" archives are *not* supported in Python 2 due to
`limitations in the core bz2 library
<https://docs.python.org/2/library/bz2.html#de-compression-of-files>`_.

>>> wiki = WikiCorpus('enwiki-20100622-pages-articles.xml.bz2') # create word->word_id mapping, takes almost 8h
>>> MmCorpus.serialize('wiki_en_vocab200k.mm', wiki) # another 8h, creates a file in MatrixMarket format plus file with id->word

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