TGINSIGHT SIMILAR POSTS
Изворен канал @pythonotes · Post #303 · 27 дек.
Наверняка вы замечали, что в Python есть удобная функция для получения переменной окружения os.getenv(NAME) И её "сестра" для создания или изменения переменных окружения os.putenv(NAME, VALUE) Но почему-то putenv() не работает как должно. Энвайромент не обновляется! os.putenv('MYVAR', '1') print(os.getenv('MYVAR')) ... и ничего 😴 Почему так? На самом деле энвайромент обновляется, но это значение не добавляется в словарь os.environ. Откройте исходник функции os.getenv(). Это просто шорткат для os.environ.get() В то время как putenv() это built-in С-функция. Словарь os.environ (или точней класс из MutableMapping) создаётся из энвайромента в момент инициализации. Функция putenv() самостоятельно его не изменяет. В тоже время, когда вы создаёте или изменяете ключ в os.environ, автоматически вызывается putenv() в методе __setitem__(). То есть, технически putenv() всё делает верно, но в os.environ это не отражается. Можно проверить так: >>> os.putenv('MYVAR', '123') >>> os.system('python -c "import os;print(os.getenv(\'MYVAR\'))"') 123 Я объявил переменную в текущем процессе и вызвал дочерний процесс, который её унаследовал и получил в составе os.environ. Аналогично при удалении переменной вызывается еще одна built-in функция unsetenv(), удаляющая переменную из системы. Итого ▫️ Удобней всего явно обновлять переменные через os.environ ▫️ Есть способ неявно создать/удалить переменную через putenv/unsetenv, что не повлияет на os.environ но изменит энвайромент и передаст изменения сабпроцессам. Но так лучше не делать! ▫️os.environ это просто обертка для built-in функций putenv() и unsetenv(). #basic
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Пребарај: #binusedtissues
@NEASingapore · Post #310 · 28.01.2022 г., 03:45
Our Wordle of the day – did you manage to get yours right today? Don’t forget to clear your table after eating at our hawker centres, coffeeshops and food courts. P.S. You don’t have to clean your table, as cleaners will be cleaning and sanitising tables. #ClearYourTable#ReturnYourTray#BinUsedTissues
@NEASingapore · Post #222 · 29.06.2021 г., 01:06
Doesn't it feel shiok to have a clean table to enjoy your favourite hawker food? When you're done, don't forget to #ReturnYourTray and #BinUsedTissues so that fellow diners can feel the same shiok. #ClearYourTable
@NEASingapore · Post #216 · 22.06.2021 г., 03:13
As we begin dining out again, remember to practise good hygiene, to protect ourselves, other diners, and our cleaners – many of whom are seniors. When you’re done eating, remember to #ClearYourTable, #ReturnYourTray and #BinUsedTissues. Leaving litter on tables at our public dining places is an offence. NEA is taking an advisory approach in the lead-up to 1 Sep 2021, after which enforcement action will be taken against patrons who fail to heed our officers’ advice. www.nea.gov.sg/media/news/advisories/index/clear-table-as-dine-in-resumes
@NEASingapore · Post #215 · 21.06.2021 г., 03:30
As dine-in gradually resumes from today, let’s do our part in keeping our favourite public dining spaces and our cleaners safe by remembering to #ReturnYourTray, #ClearYourTable and #BinUsedTissues. If we simply get up and walk away, the dirty crockery and food remnants can attract unwanted pests. Our used tissues also carry germs that pose potential health risks to cleaners and other diners.
@NEASingapore · Post #705 · 23.11.2023 г., 01:02
Expectation: All ready to order my beloved hawker delights 😍 Reality: Oh no, the previous diners did not clear their tables 🥴 Let's play our part in keeping #OurHawkerCentres clean, by clearing our used tray and crockery. Details and FAQs here: www.nea.gov.sg/clean-tables #ClearYourTable#ReturnYourTray#BinUsedTissues
@NEASingapore · Post #221 · 25.06.2021 г., 10:22
Here’s what the same area at Queen’s St Hawker Centre looks like in 2016 and 2021. What a dramatic transformation we've seen lately! Better tray return infrastructure and a new cleaning workflow are initiatives we’ve adopted to ensure cleaner and safer public dining places. Diners and cleaners at #OurHawkerCentres have played a great part in making this system work. So next time you’re dining at #OurHawkerCentres, be part of that change and #ClearYourTable, #ReturnYourTray and #BinUsedTissues to keep our public dining places clean and safe for everyone. Thank You - to our cleaners, fellow diners and all of you, for supporting us! ❤️
@NEASingapore · Post #187 · 12.05.2021 г., 02:30
#DidYouKnow that our cleaners do more than just clear our tables? They also need to sanitise tables, clear the tray/crockery return stations, and return clean crockery to the stalls. Let’s do our part to help our cleaners! #ReturnYourTray#ClearYourTable#BinUsedTissues
@NEASingapore · Post #290 · 09.12.2021 г., 03:58
Heading out for a meal? Let’s remember to keep our public dining places clean, by clearing our tables after a meal. #ClearYourTables#BinUsedTissues#ReturnOurTrays
@NEASingapore · Post #740 · 11.01.2024 г., 01:02
Savour the perfect blend of sweet, spicy, and tangy tastes of Rojak - Singapore's iconic hawker dish! 🥗🍍🥒 Whether you love it with a generous serving of thick savoury sauce or prefer it with a spicy kick, Rojak is certainly a good treat for our taste buds. P.S. Don’t forget to return your used tray and crockery after enjoying your meal! #OurHawkerCentres#OurHawkerCulture#ClearYourTable#ReturnYourTray#BinUsedTissues
@NEASingapore · Post #462 · 21.11.2022 г., 10:01
Keeping #OurHawkerCentres clean and safe is a shared responsibility! When we #ClearOurTables, #ReturnOurTrays and #BinUsedTissues after our meals, it scores a hat-trick of kindness, making it a more pleasant dining experience for everyone!
@NEASingapore · Post #226 · 06.07.2021 г., 03:03
#DidYouKnow these "dumplings" can be chock-full of germs? Ew, right? Don't forget to #BinUsedTissues, and help protect our cleaners from being exposed to potential health risks. #CleanYourTable#ThankYouCleaners
@NEASingapore · Post #734 · 02.01.2024 г., 03:47
Extending our heartfelt appreciation to diners who have been returning their used trays and crockery. This small act goes a long way towards ensuring a pleasant dining experience for everyone. Let's continue to keep #OurHawkerCentres clean this new year! Details and #FAQs here: www.nea.gov.sg/clean-tables #ClearYourTable#ReturnYourTray#BinUsedTissues