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Added optional fractionl splitting to split_wiki #15

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Added optional fractionl splitting to split_wiki #15

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24 changes: 21 additions & 3 deletions nlputils.py
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Original file line number Diff line number Diff line change
Expand Up @@ -26,8 +26,15 @@ def get_wiki(path,lang):
shutil.rmtree(path/'text')


def split_wiki(path,lang):
dest = path/'docs'
def split_wiki(path,lang,frac=1):
if frac > 1 or frac <= 0:
print(f"frac must be > 0 and <= 1, {frac} was given!")
return

if frac == 1:
dest = path/'docs'
else:
dest = path/f'docs_{frac}'
name = f'{lang}wiki'
if dest.exists():
print(f"{dest} already exists; not splitting")
Expand All @@ -37,15 +44,26 @@ def split_wiki(path,lang):
title_re = re.compile(rf'<doc id="\d+" url="https://{lang}.wikipedia.org/wiki\?curid=\d+" title="([^"]+)">')
lines = (path/name).open()
f=None

n_written = 0
if frac < 1:
text = (path/name).read_text()
n_files = len(list(filter(lambda title: len(title) <= 150, title_re.findall(text))))
del text
limit = n_files*frac
else:
limit = n_files

for i,l in enumerate(lines):
if i%100000 == 0: print(i)
if l.startswith('<doc id="'):
if n_written > limit:
break
title = title_re.findall(l)[0].replace('/','_')
if len(title)>150: continue
if f: f.close()
f = (dest/f'{title}.txt').open('w')
n_written+=1
else: f.write(l)
f.close()
return dest