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Изворен канал @pythonotes · Post #309 · 2 фев.

Метод строки split() разделяет строку на несколько строк по указанному символу >>> "a_b_c".split('_') ['a', 'b', 'c'] Можно указать максимальное количество разделений >>> "a_b_c".split('_', 1) ['a', 'b_c'] Или резать с другой стороны с помощью rsplit() (right split) >>> "a_b_c".rsplit('_', 1) ['a_b', 'c'] А что будет если оставить аргументы пустыми? >>> "a_b_c".split() ['a_b_c'] Получаем список с одним элементом, потому что по умолчанию используется пробельный символ. >>> "a b c".split() ['a', 'b', 'c'] То есть это равнозначно такому вызову? >>> "a b c".split(" ") ['a', 'b', 'c'] Кажется да, но нет! Давайте попробуем добавить пробелов между буквами >>> "a b c".split(" ") ['a', '', '', 'b', '', '', 'c'] И вот картина уже не так предсказуема 😕 А вот что будет по умолчанию >>> "a b c".split() ['a', 'b', 'c'] Всё снова красиво! 🤩 По умолчанию в качестве разделителя используется любой пробельный символ, будь то табуляция или новая строка. Включая несколько таких символов идущих подряд. А также игнорируются пробельные символы по краям строки. >>> "a\t b\n c ".split() ['a', 'b', 'c'] Аналогичный способ можно собрать с помощью регулярного выражения. Но пробелы по краям строки придется обрабатывать дополнительно. >>> import re >>> re.split(r"\s+", ' a b c '.strip()) ['a', 'b', 'c'] Здесь тоже можно указать количество разделений >>> re.split(r"\s+", 'a b c', 1) ['a', 'b c'] А что если мы хотим написать красиво, то есть split() без аргументов, но при этом указать количество разделений? В этом случае первым аргументом передаём None >>> "a\n b c".split(None, 1) ['a', 'b c'] Данный метод не учитывает строки с пробелами, взятые в кавычки 'a "b c" '.split() ['a', '"b', 'c"'] Но для таких случаев есть другие способы. #tricks#basic

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American Оbserver

@american_observer · Post #5070 · 07.02.2026 г., 00:00

📰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. #USRussia#Military#NewSTART#Nuclear#Ukraine#Trump2026#Diplomacy#NATO#Hotline 📱American Оbserver - Stay up to date on all important events 🇺🇸