WikiExtractor.py is a Python script that extracts and cleans text from a Wikipedia database dump.
The tool is written in Python and requires Python 2.7 but no additional library.
For further information, see the project Home Page or the Wiki.
cirrus-extractor.py is a version of the script that performs extraction from a Wikipedia Cirrus dump.
Cirrus dumps contain text with already expanded templates.
Cirrus dumps are available at: cirrussearch.
WikiExtractor performs template expansion by preprocesssng the whole dump and extracting template definitions.
In order to speed up processing:
- multiprocessing is used for dealing with articles in parallel
- a cache is kept of parsed templates (only useful for repeated extractions).
The script may be invoked directly, however it can be installed by doing:
(sudo) python setup.py install
The script is invoked with a Wikipedia dump file as an argument. The output is stored in several files of similar size in a given directory. Each file will contains several documents in this document format.
usage: WikiExtractor.py [-h] [-o OUTPUT] [-b n[KMG]] [-c] [--html] [-l]
[-ns ns1,ns2] [-s] [--templates TEMPLATES]
[--no-templates] [--processes PROCESSES] [-q] [--debug]
[-a] [-v]
input
positional arguments:
input XML wiki dump file
optional arguments:
-h, --help show this help message and exit
--processes PROCESSES number of processes to use (default: number of CPU cores)
Output:
-o OUTPUT, --output OUTPUT
a directory where to store the extracted files (or '-' for dumping to
stdout)
-b n[KMG], --bytes n[KMG]
maximum bytes per output file (default 1M)
-c, --compress compress output files using bzip
Processing:
--html produce HTML output, subsumes --links
-l, --links preserve links
--lists preserve lists
-ns ns1,ns2, --namespaces ns1,ns2
accepted namespaces
--templates TEMPLATES
use or create file containing templates
--no-templates Do not expand templates
--escapedoc use to escape the contents of the output
<doc>...</doc>
Special:
-q, --quiet suppress reporting progress info
--debug print debug info
-a, --article analyze a file containing a single article (debug option)
-v, --version print program version
Saving templates to a file will speed up performing extraction the next time, assuming template definitions have not changed.
Option --no-templates significantly speeds up the extractor, avoiding the cost of expanding MediaWiki templates.
For further information, visit the documentation.
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