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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@dogdata · Post #4354 · 10.11.2023 г., 08:09
Fabric Puppy Pens Dog show prices 60cm height 59 Euro 90cm height 75 Euro 105cm height 89 Euro Web3 Webshop https://kennel.ai DogShow Calendar https://kennel.ai/dog-shows #fabricpuppypen#dogdata#dogbreeder#pettravel#dogshow
@dogdata · Post #4327 · 28.10.2023 г., 07:26
Fabric Puppy Pens Dog show prices 60cm height 59 Euro 90cm height 75 Euro 105cm height 89 Euro Web3 Webshop https://kennel.ai DogShow Calendar https://kennel.ai/dog-shows #fabricpuppypen#dogdata#dogbreeder#pettravel#dogshow
@dogdata · Post #4253 · 13.08.2023 г., 08:02
On stock … Highest quality , the original Heat resistant Dog Show Tent Size is 3m x 3m Easy up just 20 seconds The Dog Show tents are Waterproof and have mosquito 🦟 lining … On the warmest of days the tent inside is cool due to the Silver UV reflective material built into every side 4 Doors , with colour choice of Purple, Orange , Blue , Grey or Green Cost is 350€ including delivery Product weight 8kg Also home delivery and payment to the driver is possible for some European countries … https://kennel.ai/shop Contact us for more information … #Dogs#DogShow#DogShowTent#InstantTent#HeatResistant
@dogdata · Post #4317 · 18.10.2023 г., 08:24
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@dogdata · Post #4295 · 01.09.2023 г., 07:23
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@dogdata · Post #4294 · 29.08.2023 г., 12:04
What's your Mood today?🐾 Kennel.ai Dog Product Shop 🐾 Cosmetics. Dryer. Grooming Table. Vehicle Ramps. Running Machines. Strollers. Feeding Bowls. Dog Show Trolley. Baths. Dog Show Tent. Whelping Boxes. Agility equipment, and so much more.... 𝔻𝕠𝕘 🐶 ℙ𝕣𝕠𝕕𝕦𝕔𝕥𝕤 𝕊𝕙𝕠𝕡 🐶 Pet Dog Shop ®️ Register Your Pet Dog Ownership On Blockchain 🛍 Check Dogs for Sale Near You Or Advertise Puppies For Free #dogs#petdog#dogbreeder#kennelclub#blockchain#Ai#decentralised#dogs#petstroller#doglover#dog#dogslife#dogsofinstagram#dogshow#dogbreeder
@dogdata · Post #4301 · 12.09.2023 г., 07:00
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@dogdata · Post #4336 · 01.11.2023 г., 16:12
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@dogdata · Post #4313 · 14.10.2023 г., 07:18
Safari Pet Strollers with Grooming Table.🐾 Kennel.ai Dog Product Shop 🐾 Cosmetics. Dryer. Grooming Table. Vehicle Ramps. Running Machines. Strollers. Feeding Bowls. Dog Show Trolley. Baths. Dog Show Tent. Whelping Boxes. Agility equipment, and so much more.... 𝔻𝕠𝕘 🐶 ℙ𝕣𝕠𝕕𝕦𝕔𝕥𝕤 𝕊𝕙𝕠𝕡 🐶 Pet Dog Shop ®️ Register Your Pet Dog Ownership On Blockchain 🛍 Check Dogs for Sale Near You Or Advertise Puppies For Free #dogs#petdog#dogbreeder#kennelclub#blockchain#Ai#decentralised#dog#dogbreeder#dogshow#dogproducts#dogsoftiktok#doghealth#doghealthtips#doghealthcare#dogregistration#doglover#doglove
@dogdata · Post #4297 · 04.09.2023 г., 07:43
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@dogdata · Post #4296 · 02.09.2023 г., 08:33
Safari Pet Strollers with Grooming Table.🐾 Kennel.ai Dog Product Shop 🐾 Cosmetics. Dryer. Grooming Table. Vehicle Ramps. Running Machines. Strollers. Feeding Bowls. Dog Show Trolley. Baths. Dog Show Tent. Whelping Boxes. Agility equipment, and so much more.... 𝔻𝕠𝕘 🐶 ℙ𝕣𝕠𝕕𝕦𝕔𝕥𝕤 𝕊𝕙𝕠𝕡 🐶 Pet Dog Shop ®️ Register Your Pet Dog Ownership On Blockchain 🛍 Check Dogs for Sale Near You Or Advertise Puppies For Free #dogs#petdog#dogbreeder#kennelclub#blockchain#Ai#decentralised#dog#dogbreeder#dogshow#dogproducts#dogsoftiktok#doghealth#doghealthtips#doghealthcare#dogregistration#doglover#doglove