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
Seville, #Spain
Metropol Parasol (the Metropol umbrella, Spanish The Metropol Parasol, also known as the Mushrooms of Seville, is a concrete and wooden structure located in the Plaza de la Encarnacion. Plaza de la Encarnación) in the old quarter of Seville. The building was designed by German architect Jürgen Mayer, and construction was completed in April 2011. The 28-meter-high facility covers an area of 150 by 75 meters and claims to be the largest wooden structure in the world.
Fuerteventure, #Spain🇪🇸
This wonderful natural pool is located on the island of Fuerteventure. 🏝
Interestingly, Fuertever is considered one of the oldest islands of Spain, formed thanks to the eruption of the volcano more than 20 million years ago. This fact confirms the unusual form of the island and the complete absence of snakes and insects dangerous for humans. Also, the pluses of this place should include an almost complete absence of rains and a soft climate.
🇪🇸#Spain / Catalonia: There were intense clashes yesterday in Sentmenat (Barcelona) between anti-fascist protesters and riot police.
Groups of demonstrators took to the streets to oppose the opening of a new delegation and headquarters by the neo-Nazi group Núcleo Nacional. Hundreds of anti-fascist activists gathered near the industrial area where the far-right group was holding an event, leading to police charges as officers attempted to prevent protesters from reaching the venue.
(📹 via @rebonico on X)
🇪🇸#Spain: Europol and the Spanish National Police have uncovered a far-right accelerationist cell linked to The Base. Three suspects were arrested during coordinated raids in Madrid, Valencia and Castellón, with officers seizing firearms, ammunition, knives, tactical gear, and accelerationist/neo-Nazi propaganda.
According to investigators, the cell was "highly radicalised" and it had conducted paramilitary style training, while being allegedly in contact with The Base's founder, Rinaldo Nazzaro. Only a month ago, The Base issued messages on its Telegram channels urging the consolidation of its dispersed international cells.
(via The Guardian)
😍When talking about Barcelona, one immediately thinks of the Sagrada Familia.
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After 137 years, this landmark has become one of the most visited not only in Catalonia but in all of Europe.
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#Spain🇪🇸
@voyage
🗺Spain 🇪🇸
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Mount Tibidabo — the highest point in the Spanish city of Barcelona, part of the Collserola range.
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🌟From this hill, you get a stunning panorama of the Catalonian capital, enjoyed by both tourists and locals. Though relatively low at just over 500 meters above sea level, both the mountain and its summit attractions are visible from anywhere in the city.
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#Spain
@voyage
November in Barcelona is pure magic
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💚This area between Urquinaona Square and Paseo de San Juan Avenue is a treasure trove of architectural masterpieces! Every building here is a work of art, rich in history and unique charm.
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💚Imagine walking down a narrow street, the autumn leaves rustling underfoot, with majestic buildings towering around you, adorned with elegant balconies and carved doors. Time seems to slow down, and you’re immersed in the atmosphere of old Barcelona.
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#Spain🇪🇸
@voyage
Spain 🇪🇸
Mount Tibidabo — the highest point in the Spanish city of Barcelona, part of the Collserola range.
From this hill, you get a stunning panorama of the Catalonian capital, enjoyed by both tourists and locals. Though relatively low at just over 500 meters above sea level, both the mountain and its summit attractions are visible from anywhere in the city.
#Spain
@voyage