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: #tpfam
@tokenpocket_channel · Post #1738 · 01.01.2026 г., 09:00
🎆 Happy New Year! #TPFam We wish you glowing health, top-tier security for all your assets, and a market that stays eternally bullish. 🌕 May this year bring you boundless prosperity and exciting opportunities in crypto!
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@tokenpocket_channel · Post #1256 · 02.03.2024 г., 14:53
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@tokenpocket_channel · Post #1163 · 30.01.2024 г., 09:21
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@tokenpocket_channel · Post #1753 · 22.01.2026 г., 06:59
🌊 2025 has been a year filled with growth, challenges, and continued progress. To our #TPFam — your support has powered every step forward. 💙 Thank you for building and growing with TokenPocket. Dive into the #TokenPocket 2025 Annual Report 👇 https://tokenpocket-gm.medium.com/tokenpocket-2025-annual-report-7820b638a1d1 https://x.com/TokenPocket_TP/status/2013901810453410143?s=20
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@tokenpocket_channel · Post #1186 · 05.02.2024 г., 07:06
With the unwavering support from [#TPFam](https://twitter.com/hashtag/TPFam), 2023 has been a year of significant breakthroughs! 🎯 Always have a BIG Thanks in my mind and thank you for helping us make everything possible! 💙 Dive into the [#TokenPocket](https://twitter.com/hashtag/TokenPocket) 2023 Annual Report 👇 https://tokenpocket-gm.medium.com/tokenpocket-2023-annual-report-3b9bd4025f83 【Details】https://twitter.com/TokenPocket_TP/status/1754399781915631720 【Powered By】Crypto Box
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@tokenpocket_channel · Post #1170 · 02.02.2024 г., 01:40
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@tokenpocket_channel · Post #1144 · 25.01.2024 г., 03:35
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@tokenpocket_channel · Post #1042 · 24.12.2023 г., 12:14
🧑🎄Merry Christmas! #TPFam#TokenPocketChristmas ❄️May your wallets be filled with joy, your transactions be seamless, and may the blockchain of happiness bless you with endless prosperity. Wishing you a Merry Christmas and a crypto-filled New Year! 🚀🌟 👉https://www.tokenpocket.pro/ 【Details】https://twitter.com/TokenPocket_TP/status/1738895386377601385 【Powered By】Crypto Box
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@tokenpocket_channel · Post #1187 · 05.02.2024 г., 07:55
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@tokenpocket_channel · Post #1336 · 07.05.2024 г., 09:27
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@tokenpocket_channel · Post #1168 · 01.02.2024 г., 09:28
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@tokenpocket_channel · Post #935 · 23.11.2023 г., 09:33
💕💕Happy #Thanksgiving! 🐔 Wishing You a Joyous Thanksgiving! Thank you for the unwavering support from #TPFam and #TokenPocket Partners! Keep Building! 🏃🏃♂️🏃♀️ 【Details】https://twitter.com/TokenPocket_TP/status/1727620906225373326 【Powered By】Crypto Box
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