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extractor_new.py
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extractor_new.py
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from number import NUMBER
from natasha.extractors import Extractor
import math
class NumberExtractor(Extractor):
def __init__(self):
super(NumberExtractor, self).__init__(NUMBER)
def n_digits(self, n):
if n > 0:
digits = int(math.log10(n)) + 1
elif n == 0:
digits = 1
else:
digits = int(math.log10(-n)) + 2 # +1 if you don't count the '-'
return digits
def trailing_zeros(self, n: int):
"""
Count trailing zeros of a number
Args:
n: number
Result:
cnt: count of zeros
"""
cnt = 0
while n % 10 == 0 and n != 0:
cnt += 1
n = n / 10
return cnt
def replace(self, text):
"""
Замена чисел в тексте без их группировки
Аргументы:
text: исходный текст
Результат:
new_text: текст с замененными числами
"""
if text:
new_text = ""
start = 0
for match in self.parser.findall(text):
if match.fact.multiplier:
num = match.fact.int * match.fact.multiplier
else:
num = match.fact.int
new_text += text[start: match.span.start] + str(num)
start = match.span.stop
new_text += text[start:]
if start == 0:
return text
else:
return new_text
else:
return None
def _get_groups(self, text):
start = 0
matches = list(self.parser.findall(text))
groups = []
group_matches = []
for i, match in enumerate(matches):
if i == 0:
start = match.span.start
if i == len(matches) - 1:
next_match = match
else:
next_match = matches[i + 1]
group_matches.append(match.fact)
if text[match.span.stop: next_match.span.start].strip() or next_match == match:
groups.append((group_matches, start, match.span.stop))
group_matches = []
start = next_match.span.start
return groups
def replace_groups(self, text):
"""
Замена сгруппированных составных чисел в тексте
Аргументы:
text: исходный текст
Результат:
new_text: текст с замененными числами
"""
groups = self._get_groups(text)
new_text = ""
start = 0
for group in groups:
num = 0
nums = []
new_text += text[start: group[1]]
for match in group[0]:
curr_num = match.int * match.multiplier if match.multiplier else match.int
if match.multiplier:
num = (num + match.int) * match.multiplier
nums.append(num)
num = 0
elif num > curr_num or num == 0:
num += curr_num
else:
nums.append(num)
num = 0
if num > 0:
nums.append(num)
new_text += str(sum(nums))
start = group[2]
new_text += text[start:]
return new_text
def replace_groups_sa(self, text):
"""
Замена сгруппированных составных чисел в тексте и отдельно стоящих чисел без их суммирования
Аргументы:
text: исходный текст
Результат:
new_text: текст с замененными числами
"""
groups = self._get_groups(text)
new_text = ''
start = 0
for group in groups:
new_text += text[start: group[1]]
nums = []
prev_tz = 0
prev_mult = None
for match in group[0]:
mult = match.multiplier if match.multiplier else 1
curr_num = match.int
tz = self.trailing_zeros(curr_num)
if (tz < prev_tz) and (mult >= prev_mult) and curr_num != 0 and (
self.n_digits(curr_num) < self.n_digits(nums[0][0])):
nums[0] = (nums[0][0] + curr_num, mult)
else:
nums.insert(0, (curr_num, mult))
prev_mult = mult
prev_tz = tz
prev_mult = None
new_nums = []
for num, mult in nums:
if not prev_mult or mult <= prev_mult:
new_nums.append(num * mult)
else:
new_nums[-1] += num * mult
prev_mult = mult
new_nums.reverse()
new_text += ' '.join(map(str, new_nums))
start = group[2]
new_text += text[start:]
return new_text