Ранее я делал серию постов про битовые операторы.
Вот вам ещё один наглядный пример как это используется в Python в модуле re.
Чтобы указать флаг для компилятора нам надо указать его после передаваемой строки. Например, добавляем флаг для игнорирования переноса строки.
pattern = re.compile(r"(\w+)+")
words = pattern.search(text, re.DOTALL)
А как указать несколько флагов? Ведь явно будут ситуации когда нам потребуется больше одного. Кто читал посты по битовые операторы уже понял как.
pattern.search(text, re.DOTALL | re.VERBOSE)
А теперь смотрим исходники, что находится в этих атрибутах?
Не удивительно, степени двойки. Почему? Потому что каждое следующее значение это сдвиг единицы влево.
>>> for n in [1, 2, 4, 8, 16, 32, 64, 128, 256]:
>>>
print(bin(n))
0b1
0b10
0b100
0b1000
0b10000
0b100000
0b1000000
0b10000000
0b100000000
Чтобы было понятней, давайте напишем тоже самое но иначе, добавим ведущие нули:
000000001
000000010
000000100
000001000
000010000
000100000
001000000
010000000
100000000
Не понятно что тут происходит? Читай три поста про битовые операторы начиная с этого ➡️https://t.me/pythonotes/45
В общем, это пример применения побитовых операций в самом Python.
Теперь вы знаете Python еще немного лучше)
#tricks#regex#libs
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The accident shows the persistent risks associated with the widespread use of cargo trucks for passenger transport in rural Ethiopia, where limited transport options, now exacerbated by chronic fuel shortages across the country, often force residents to travel under dangerous conditions.
Many of the victims were residents of the same locality, often traveling together in groups for work between Tsagibji and Ebnat localities. “Yesterday [Sunday] alone, we sent 17 bodies back to one specific area,” the official said, adding that several victims were members of the same families.
The Deputy Commander also said the area where the accident occurred has been under the control of Fano fighters for the past three years, preventing authorities from reaching the scene to investigate the cause of the crash.
https://addisstandard.com/?p=56655.
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Targeting the Amhara Intelligentsia: Killings, Detentions, and the Legal Threshold of Genocide Under International Law. Read more.
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#Ethiopia: Federal Police say its forces "seize illegal weapons" intended for "terrorist purposes" after arriving in #Addis_Abeba from #Amhara region
Addis Abeba: The Ethiopian Federal Police claimed its forces have “seized illegal weapons”, “intended for terrorist purposes” after the arms allegedly arrived in Addis Abeba “from the Amhara region.”
In a statement, the Federal Police said the first seizure occurred at the Legetafo checkpoint, where officers “intercepted a vehicle”.
Following what the federal police claimed as a “rigorous inspection,” authorities discovered “eight AK-47 assault rifles, 151 rounds of AK-47 ammunition, 17 rounds of Bren machine gun ammunition, and seven AK-47 magazines concealed inside the vehicle.”
“The illegal weapons were being transported for terrorist purposes,” the Federal Police said, adding that the suspects were “detained at the scene.”
https://x.com/addisstandard/status/2037186920086733010?s=20
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Ethiopian Rebels Claim They Have killed 45 Gov’t Soldiers in Gojjam. Read more. https://borkena.com/2025/12/25/ethiopian-rebels-claim-they-have-killed-45-govt-soldiers-in-gojjam/#Ethiopia#news#Amhara#Fano