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: #geography
@googlefactss · Post #39968 · 28.10.2025 г., 21:01
Mount Augustus in the Australian Outback is the largest rock on earth standing at approximately 717 meters (2,352 feet) high above the surrounding plains and can be seen from almost 100 miles away. @googlefactss#geography
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@languagetrivia · Post #471 · 12.12.2024 г., 12:08
📍 What is the official language of the world’s largest island? A) Malagasy B) Greenlandic C) English D) Malay Take the quiz below to see if you are correct @languagetrivia#guess_the_language#geography
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@languagetrivia · Post #301 · 09.11.2024 г., 17:57
Gibraltar is a small territory located on the southern coast of the Iberian Peninsula, on the Mediterranean Sea. It is bordered by Spain to the north and sits at the entrance of the Strait of Gibraltar, which separates Europe from Africa. Known for its iconic Rock of Gibraltar, this territory has a unique geographic and cultural identity. What is the official language of Gibraltar? • A) Spanish • B) English • C) Andalusian Arabic • D) Portuguese Press ❤️ Follow @languagetrivia for more fun facts! #geography#guess_the_language
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@EuropeanTribalism · Post #534 · 20.07.2020 г., 05:06
The Salzkammergut is a region in Austria, mostly frequented for relaxation vacation, hiking and climbimg. It stretches from the city of Salzburg eastwards to the Dachstein Mountains. The historic city of Hallstatt is located in the Salzkammergut, giving name to the Hallstatt culture, the predominant Western and Central European culture of the late Bronze Age from the 12th to 8th centuries BC and early Iron Age from the 8th to 6th centuries BC. #geography#history @EuropeanTribalism
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@languagetrivia · Post #123 · 04.10.2024 г., 17:20
What is one of the two official languages of Macau, a region of China often referred to as the 'Las Vegas of the East'? 🧠 Join @languagetrivia for more fascinating questions #guess_the_language#image#geography Check out the correct answer in the comment
@IMRoom · Post #21 · 13.12.2020 г., 12:23
Why is [country] ____? (from USA google) sourece: https://www.reddit.com/r/MapPorn/comments/kc6mwr/why_is_country_from_usa_google/ #Geography#Map
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@interesting_planet_facts · Post #1298 · 17.02.2026 г., 22:11
🌎 Along the India-Bangladesh border, a cluster of over 160 tiny enclaves once existed, creating a patchwork of territories within territories. Before a 2015 land swap, some villages belonged to India but were completely surrounded by Bangladesh, and vice versa, forming the world’s most complex international border tangle. ✨ #borders⚡#geography⚡#history 👉subscribe Interesting Planet 👉more Channels
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@interesting_planet_facts · Post #1202 · 07.01.2026 г., 22:11
🌎 Baarle-Hertog and Baarle-Nassau, two towns in Belgium and the Netherlands, form one of the world’s most complex borders, with 26 separate enclaves and counter-enclaves interlocking like a puzzle. Some houses are split between countries, with the nationality determined by the location of the front door. ✨ #geography⚡#borders⚡#history 👉subscribe Interesting Planet 👉more Channels
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@interesting_planet_facts · Post #1115 · 09.12.2025 г., 22:11
🌎 The border between India and Bangladesh features over 160 enclaves and counter-enclaves—small pockets of land belonging to one country inside the other. Before a 2015 land swap, Dahala Khagrabari was the world’s only third-order enclave: an Indian village inside a Bangladeshi enclave, within an Indian enclave, inside Bangladesh. ✨ #borders⚡#geography⚡#history 👉subscribe Interesting Planet 👉more Channels
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@interesting_planet_facts · Post #1083 · 29.11.2025 г., 12:11
🌎 Few borders are stranger than the Haskell Free Library and Opera House, built in 1904 directly on the US-Canada line. The building straddles Derby Line, Vermont, and Stanstead, Quebec, with a black line on the floor marking the international boundary. Its reading room is in the US, but most books are in Canada. ✨ #borders⚡#geography⚡#history 👉subscribe Interesting Planet 👉more Channels
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@interesting_planet_facts · Post #1051 · 18.11.2025 г., 22:11
🌎 Strange borders divide the island of Cyprus: the capital, Nicosia, is split by the "Green Line," a UN-controlled buffer zone between Greek and Turkish Cypriot sectors. This boundary cuts through streets and buildings, creating the world’s last divided capital city. ✨ #borders⚡#geography⚡#history 👉subscribe Interesting Planet 👉more Channels
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@interesting_planet_facts · Post #1012 · 07.11.2025 г., 12:11
🌎 The divided town of Baarle straddles the border between Belgium and the Netherlands in a tangled patchwork of enclaves. Some houses are split by the boundary, so front doors determine which country's laws apply. This border complexity results from medieval land deals, with 22 Belgian and 8 Dutch enclaves in total. ✨ #borders⚡#geography⚡#history 👉subscribe Interesting Planet 👉more Channels
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