he number of sampled documents or the minimum length see
usage: preprocess.py [-h] -l LANG [-n NUMBER_DOCS] [-m MIN_DOC_LENGTH] [--mirror MIRROR] [--cleanup]

# To cleanup indermediate files (wikiextractor and all splitted documents) run the following command. 
# The Wikipedia-XML-Dump and the sampled docs will not be deleted!
docker run -v $(pwd)/data:/data -it wikiextractor -l &lt;language-code&gt; --cleanup</code></pre>

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