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Изворен канал @pythonotes · Post #76 · 27 апр.
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
Пребарај: #september
@Dailyrss · Post #13123 · 30.09.2025 г., 00:45
Wikipedia每日一图（#September 30, 2025）https://ift.tt/y5Fte6m Loggerhead sea turtle (Caretta caretta) with diver in the background, Fernando de Noronha Marine National Park, Pernambuco, Brazil. 了解更多 . #Wikipedia每日一图
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@Dailyrss · Post #13122 · 29.09.2025 г., 00:45
Wikipedia每日一图（#September 29, 2025）https://ift.tt/FQ5hyn8 Fall of the Rebel Angels is a fresco by Giacinto Brandi adorning the central vault of Sant'Ambrogio e Carlo al Corso basilica in Rome. It depicts Michael the Archangel's victory in battle over fallen angels. Today is Michaelmas.. 了解更多 . #Wikipedia每日一图
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@Dailyrss · Post #13121 · 28.09.2025 г., 00:45
Wikipedia每日一图（#September 28, 2025）https://ift.tt/Jhp6sa7 French chemist and microbiologist Louis Pasteur photographed by Nadar. Renowned for his scientific discoveries, he saved millions by developing vaccines for rabies and anthrax, as well as the process of pasteurization. He died on this day 130 years ago.. 了解更多 . #Wikipedia每日一图
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@Dailyrss · Post #13120 · 27.09.2025 г., 00:45
Wikipedia每日一图（#September 27, 2025）https://ift.tt/suPWQxz Panoramic view of the west bank of Nigeen Lake in Srinagar, India, with the distant Middle Himalayan Pir Panjal mountain range in the background. The city, situated on the banks of the Jhelum river and several lakes in the Himalayan Kashmir Valley, is the summer capital of Jammu and Kashmir and the northernmost million-plus city of India.. 了解更多 . #Wikipedia每日一图
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@Dailyrss · Post #13119 · 26.09.2025 г., 00:45
Wikipedia每日一图（#September 26, 2025）https://ift.tt/0kyxNdY An image of Arab twin brothers Saints Cosmas and Damian from the Grandes Heures of Anne of Brittany. As ancient physicians, they are depicted holding tools of their profession. Today is their feast day on the General Roman Calendar.. 了解更多 . #Wikipedia每日一图
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@Dailyrss · Post #13118 · 25.09.2025 г., 00:45
Wikipedia每日一图（#September 25, 2025）https://ift.tt/Vm9gkLa Concrete paving with gaps in the parking lot of the city cemetery of Waldenbuch, Germany. 了解更多 . #Wikipedia每日一图
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@Dailyrss · Post #13117 · 24.09.2025 г., 00:45
Wikipedia每日一图（#September 24, 2025）https://ift.tt/ejIC2yx Feskekôrka (meaning "fish church") is a historic building in Gothenburg, Sweden that formerly housed an indoor fish market. Its name is based on the building's resemblance to a neo-Gothic church.. 了解更多 . #Wikipedia每日一图
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@Dailyrss · Post #13116 · 23.09.2025 г., 00:45
Wikipedia每日一图（#September 23, 2025）https://ift.tt/jrMK0Ez The participants of the Prussian Egypt expedition on the top of the Great Pyramid, watercolour by Johann Jakob Frey, 1842. 了解更多 . #Wikipedia每日一图
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@Dailyrss · Post #13115 · 22.09.2025 г., 00:45
Wikipedia每日一图（#September 22, 2025）https://ift.tt/lGQLJyW The Isaiah Scroll is the best preserved of the seven Dead Sea Scrolls that were first discovered by Bedouin shepherds from Qumran. The Dead Sea Scrolls were first made available to the public on this date in 1991.. 了解更多 . #Wikipedia每日一图
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@Dailyrss · Post #13114 · 21.09.2025 г., 00:45
Wikipedia每日一图（#September 21, 2025）https://ift.tt/aCQfK0F This sculpture representing the Gospel of Matthew appears in St. Genesius Church in Baden-Württemberg. It depicts a tetramorph element standing next the apostle reading a codex. Today is Saint Matthew's feast day.. 了解更多 . #Wikipedia每日一图
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@Dailyrss · Post #13113 · 20.09.2025 г., 00:45
Wikipedia每日一图（#September 20, 2025）https://ift.tt/qsRNKZJ Paesens. Dobbe (Little lake) behind the sea wall.. 了解更多 . #Wikipedia每日一图
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@Dailyrss · Post #13112 · 19.09.2025 г., 00:45
Wikipedia每日一图（#September 19, 2025）https://ift.tt/JP50xro Haigerloch, Germany: view of the old town with its picturesque location in a bend of the Eyach river. In the centre Haigerloch Castle and the castle church.. 了解更多 . #Wikipedia每日一图
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