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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

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Пронајдени 11 слични објави

Пребарај: #recycleourewaste

当前筛选 #recycleourewaste清除筛选
NEA Singapore

@NEASingapore · Post #1170 · 18.11.2025 г., 03:22

Batteries are a big no-no in blue recycling bins as they could short-circuit and set fire to other materials. Drop them off in e-waste recycling bins instead. Learn more: go.gov.sg/e-waste#RecycleOurEWaste

NEA Singapore

@NEASingapore · Post #1153 · 24.10.2025 г., 01:04

Still holding on to your spoilt electrical & electronic devices that are beyond repair? It’s time to let it go! Recycle them to recover precious materials (e.g. gold, silver, copper) that can be used to make new products. Learn more about how to recycle your e-waste at go.gov.sg/e-waste #RecycleOurEWaste#RecycleRight

NEA Singapore

@NEASingapore · Post #1146 · 11.10.2025 г., 01:02

𝗟𝗲𝘁’𝘀 𝗸𝗲𝗲𝗽 𝗲-𝘄𝗮𝘀𝘁𝗲 𝗼𝘂𝘁 𝗼𝗳 𝗼𝘂𝗿 𝗹𝗮𝗻𝗱𝗳𝗶𝗹𝗹𝘀! Here’s how you can make a difference: 1. Fix your device instead of buying a new one 2. Opt for second-hand items 3. Donate working devices to someone who needs them 4. Recycle your e-waste: go.gov.sg/e-waste Join us at the International E-waste Day event to learn more! 🕰️12 Oct 2025 (Sun), 11.30am to 5pm 📍Bedok Town Square Every small action counts towards a greener future. 💚 #RecycleOurEWaste#RecycleRight

NEA Singapore

@NEASingapore · Post #489 · 16.01.2023 г., 10:10

We all wish for abundance during Lunar New Year, so let’s preserve our planet’s precious resources by recycling e-waste properly. 🐰💚♻️ Find out where you can recycle your e-waste here: go.gov.sg/e-waste #RecycleOurEWaste#RecycleRight

NEA Singapore

@NEASingapore · Post #205 · 04.06.2021 г., 02:13

E-waste recycling bins are available from today, at selected Dairy Farm Group & Harvey Norman outlets, ahead of NEA’s national e-waste management scheme on 1 Jul 2021. Drop off your e-waste and earn points that can be redeemed for shopping vouchers. Find out where the bins are at https://go.gov.sg/e-waste #RecycleOurEWaste#SayYEStoWasteLess

NEA Singapore

@NEASingapore · Post #300 · 04.01.2022 г., 09:30

#DidYouKnow e-waste can have many useful materials, including gold, silver, copper or plastic, that can be recovered and made into new products? Test your knowledge and share your views on e-waste recycling at go.gov.sg/ewaste-survey #RecycleOurEWaste#SayYEStoWasteLess

NEA Singapore

@NEASingapore · Post #672 · 14.10.2023 г., 01:00

Here’s a #FunFact on International E-waste Day: #DidYouKnow e-waste contains many useful materials, including gold, silver, copper or plastic, that may be recovered and made into new products? ♻️ Let’s #RecycleOurEWaste properly. Visit NEA’s (go.gov.sg/e-waste) and ALBA Singapore’s websites (www.alba-ewaste.sg) for the locations of the e-waste recycling bins and more information about the e-waste management system. #RecycleRight Let’s also reduce the amount of e-waste generated by: (a) considering if you really need to buy a new product, or if the current one can be repaired (b) choosing second-hand products over new products (c) donating devices that are in good condition to those who could put them to better use

NEA Singapore

@NEASingapore · Post #286 · 25.11.2021 г., 02:01

It’s sales galore, with #BlackFriday, #CyberMonday, and the 12.12 sales coming up in the next few weeks, but before tapping on the check out button, ask yourself: “Do I really need this?” For instance, if your current electronic device isn’t working, try sending it for repair, to save it from the landfill. And if it is beyond repair, don’t forget to drop it in a recycle bin. More at https://go.gov.sg/nea-recycle-e-waste #RecycleOurEWaste#SayYEStoWasteLess

NEA Singapore

@NEASingapore · Post #915 · 14.10.2024 г., 05:36

Give your e-waste a second life by recycling them this International E-waste Day 📱💻♻️ Find out more about how to recycle your e-waste at go.gov.sg/e-waste Let’s also reduce the amount of e-waste generated by: - Considering if you really need to buy new a product or if the current one can be repaired - Choosing second-hand products over new products - Donating devices that are in good condition to those who could put them to better use #RecycleRight#RecycleOurEWaste#IEWD2024#InternationalEWasteDay2024#DataSecurity