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
🤝$300 Spread the Word Contest — Create Content & Get Rewarded!
In anticipation of the start of Squad Games Season 2, the #Electra team is launching a creative competition for the community with a prize pool of $300 USDT!
You create content and get a chance to win a prize!
💸
✔️How to participate?
🟢 Make a post/video/image about Squad Games Season 2
🟢 Post it on one of the platforms with the hashtag #electra:
🌐Twitter (X)
🌐TikTok
🌎Instagram Reels
📺YouTube Shorts
🟢 Leave a link to your content in the comments below ➡️the original post by Electra
💵Awards:
300 USDT will be distributed among 5 authors of the most viral and creative works. Each winner will receive 60 USDT.
🗓Deadlines: up to and including May 26, hurry up!
🤑Electra is once again encouraging creativity and community — if you've been wanting to prove yourself, this is the perfect chance.
#Electra#SquadGames#Contest
🤝Squad Games Season 2 by Electra – MORE REWARDS, MORE ACTION!
After a successful first season, #Electra launches Squad Games Season 2 — this time with even higher stakes: more prizes, more bonuses, more winners, and more opportunities for active traders!
📅 Tournament Start: May 26
🕓 Duration: 2 weeks
💵Squad Rewards:
💲 Up to $100,000 USDT
🎁 Up to $100,000 in bonus vouchers
⚡️5,000,000 airdrop points
*Rewards will be distributed among the top 20 traders by volume in each of the top-6 squads.
💵Individual Rewards:
💲 $5,000 USDT will be shared among the top-20 traders with the highest PnL (in USDT) throughout the tournament.
💵 Daily Bonuses — $50 each*:
✅Best PnL of the day
✅Worst PnL of the day
✅Highest daily trading volume
*Rewards are issued as Electra bonus vouchers and will be distributed after the tournament ends.
🤑Just like in Season 1, all trading activity counts toward farming points for the upcoming $ELT airdrop!
So by participating in the tournament, you’re not only competing for real rewards, but also boosting your future $ELT airdrop share.
⚡️ Electra also teased $ELT tokenomics:
• TGE supply — 100,000,000 $ELT
• Up to 10% allocated to the community airdrop
• 5,000,000 $ELT were already distributed in Season 1
• Season 2 has a significantly larger allocation focused on active traders and volume!
📈Took part in the Storm Trade contest and liked the vibe?
Then Squad Games by Electra is your next-level challenge:
✅ Bigger rewards
✅ $ELT farming
✅ Real incentives for your trading activity
🤑 The tournament is live!Join our squad, farm points and claim your share of rewards!
❤️TON Events Squad🧪
#Electra#SquadGames#Season2#Airdrop
🤝Squad Games Season 2 by Electra – MORE REWARDS, MORE ACTION!
After a successful first season, #Electra launches Squad Games Season 2 — this time with even higher stakes: more prizes, more bonuses, more winners, and more opportunities for active traders!
📅 Tournament Start: May 26
🕓 Duration: 2 weeks
💵Squad Rewards:
💲 Up to $100,000 USDT
🎁 Up to $100,000 in bonus vouchers
⚡️5,000,000 airdrop points
*Rewards will be distributed among the top 20 traders by volume in each of the top-6 squads.
💵Individual Rewards:
💲 $5,000 USDT will be shared among the top-20 traders with the highest PnL (in USDT) throughout the tournament.
💵 Daily Bonuses — $50 each*:
✅Best PnL of the day
✅Worst PnL of the day
✅Highest daily trading volume
*Rewards are issued as Electra bonus vouchers and will be distributed after the tournament ends.
🤑Just like in Season 1, all trading activity counts toward farming points for the upcoming $ELT airdrop!
So by participating in the tournament, you’re not only competing for real rewards, but also boosting your future $ELT airdrop share.
⚡️ Electra also teased $ELT tokenomics:
• TGE supply — 100,000,000 $ELT
• Up to 10% allocated to the community airdrop
• 5,000,000 $ELT were already distributed in Season 1
• Season 2 has a significantly larger allocation focused on active traders and volume!
📈Took part in the Storm Trade contest and liked the vibe?
Then Squad Games by Electra is your next-level challenge:
✅ Bigger rewards
✅ $ELT farming
✅ Real incentives for your trading activity
🤑 The tournament is live!Join our squad, farm points and claim your share of rewards!
❤️TON Events Squad🧪
#Electra#SquadGames#Season2#Airdrop