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Изворен канал @pythonotes · Post #201 · 13 јан.

Мы уже знаем, что на текущую сессию интерпретатора изменение PYTHONPATH никак не повлияет. Но если вы запустите дочерний процесс, то он унаследует окружение текущего процесса, а значит и изменения в любых переменных будут на него влиять. Вот небольшой пример: Объявляем переменную user@host:~$ export PYTHONPATH=/path1 Запускаем интерпретатор user@host:~$ python3 Проверим что в sys.path >>> import sys >>> print(sys.path) ['', '/path1', '/usr/lib/...', ...] Добавляем что-то в переменную >>> import os >>> os.emviron['PYTHONPATH'] = '/path1:/path2' >>> print(sys.path) ['', '/path1', '/usr/lib/...', ...] Изменений нет. Но давайте запустим дочерний процесс и посмотрим там >>> os.system('python3') # теперь мы находимся в другом процессе >>> import sys >>> print(sys.path) ['', '/path1', '/path2', '/usr/lib/...', ...] Тоже самое будет и с subprocess, так как по умолчанию текущее окружение тоже наследуется. >>> import subprocess >>> subprocess.call(['python3', '-c', 'import sys;print(sys.path)']) ['', '/path1', '/path2', '/usr/lib/...', ...] ______________________ Лучшей практикой является передача энвайронмента явно через аргумент env! import subprocess subprocess.call(cmd, env={'PYTHONPATH': '...'}) Это поможет точно понимать какое окружение будет у запускаемого процесса и при этом не изменять окружение текущего процесса. #basic

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Everything Science

@everything_science · Post #3429 · 01.05.2025 г., 15:50

This is an indoor pig farm in Hubei, China, housing almost 1 million pigs. The pigs never see the outside. #Country 🔔@Everything_Science

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Everything Science

@everything_science · Post #3428 · 01.05.2025 г., 05:45

Japanese man's dream Ferrari burned down just 1 hour after he bought it after 10 years of saving💔 #Country 🔔@Everything_Science

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Everything Science

@everything_science · Post #3416 · 26.04.2025 г., 16:51

Students are required to wear anti cheating headgear during their midterm exam in a university in the Philippines #Country 🔔@Everything_Science

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Everything Science

@everything_science · Post #3408 · 22.04.2025 г., 19:43

In Switzerland, if you fail your practical driver’s license test 3 times, you are required to consult an official psychologist to assess the reasons for your previous failures before you are allowed to retake the exam. #Country 🔔@Everything_Science

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Everything Science

@everything_science · Post #3404 · 19.04.2025 г., 20:28

Indian army spent 6 months watching "Chinese spy drones," which actually were the planets Jupiter & Venus. #Country 🔔@Everything_Science

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Everything Science

@everything_science · Post #3379 · 05.04.2025 г., 19:21

Saudi arabia is turning the Desert green With a bold plan to plant 10 Billion trees, they're leading the fight against climate change. #Country 🔔@Everything_Science

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Everything Science

@everything_science · Post #3360 · 29.03.2025 г., 20:24

Ugandan Politician, Evelyn Anite took back an ambulance she donated to her district, after losing an election in 2021. #Country 🔔@Everything_Science

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Everything Science

@everything_science · Post #3354 · 25.03.2025 г., 16:15

In Spain, it is a tradition for hunters to kill their Spanish Greyhound hunting dogs at the end of the hunting season. Young healthy dogs are hung, shot, maimed and/or strangled and left to die. #Country 🔔@Everything_Science

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Everything Science

@everything_science · Post #3349 · 22.03.2025 г., 12:17

Moscow street dogs display specialized behaviors that differentiate them from domesticated dogs & wolves: pack leaders tend to be the most intelligent rather than the strongest, and packs tend to deploy its cuter members first, as they are more successful in begging for food from people. #Country 🔔@Everything_Science

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