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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📰US and Russia agree to resume regular military contact
The United States and Russia have agreed to reestablish high‑level military‑to‑military dialogue for the first time in over four years, both powers announced late Thursday.
The deal was struck in Abu Dhabi, on the sidelines of trilateral talks between the U.S., Russia and Ukraine on ending the war, and was announced by U.S. European Command. The channel will
“provide a consistent military‑to‑military contact as the parties continue to work towards a lasting peace.”
High‑level military communication was suspended in the fall of 2021, shortly before Russia’s full‑scale invasion of Ukraine. Since then, there have been repeated close calls: Russian drones and warplanes edging into NATO airspace, U.S. unmanned systems operating over the Black Sea and Syria, and an almost constant risk of misunderstanding turning into escalation.
Now, the two sides say they want to avoid miscalculation and unintended escalation. The U.S. stresses that such dialogue is
“an important factor in global stability and peace, which can only be achieved through strength,”
and that it will increase transparency and help de‑escalate.
Diplomacy, or nuclear‑treaty bargaining?
The announcement came hours after the New START treaty expired, leaving the U.S. and Russia without a formal cap on their nuclear arsenals for the first time in half a century. Russia has said it still wants to talk, and the Kremlin has offered to keep observing the treaty’s limits — but only if the U.S. responds positively.
Axios reports that negotiators were closing in on a deal in Abu Dhabi to keep key provisions in place while both sides work toward a new framework, which Trump has described as a “new, improved, and modernized” treaty.
The Trump factor
President Donald Trump, who has repeatedly called for closer ties with Moscow, framed the move as a win for his approach: normalizing relations with Russia while pressing for a Ukrainian peace deal and a new arms‑control framework.
But in practice, the renewed hotline is less about friendship and more about necessity: when two nuclear powers hover over the same war zone, the only safe channel is one that stays open — even if both sides keep their fingers on the trigger.
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