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Изворен канал @pythonotes · Post #411 · 9 фев.

reload_flag="" if [[ -n "${DEBUG}" ]]; then reload_flag="--reload" fi if [[ -n "${WORKER_COUNT}" ]]; then workers=${WORKER_COUNT} else workers=2 fi gunicorn --workers ${workers} \ --bind 0.0.0.0:8000 \ ${reload_flag} main.wsgi Писали такие конструкции чтобы проверить наличие флага и сформировать команду правильно? На самом деле можно сделать тоже самое проще. Для этого используются операторы условной подстановки, доступные в оболочках семейства POSIX. :- для установки значений по умолчанию ${WORKER_COUNT:-2} Если переменная не объявлена, то будет дефолтное значение 2. :+ подставляет указанный текст, если переменная не пуста ${DEBUG:+--reload} Если что-то есть в переменной то распечатается текст после символа +, в противном случае - ничего. Удобно для опциональных флагов, как в нашем примере. Итого наш скрипт может выглядеть так: gunicorn --workers ${WORKER_COUNT:-2} \ --bind 0.0.0.0:8000 \ ${DEBUG:+--reload} main.wsgi Есть еще два оператора. := не только подставить дефолтное значение, но и присвоить его переменной, если она пуста # никаких переменных еще нет VAL1=${VAL2:=hello} # теперь доступны обе echo $VAL1 $VAL2 # hello hello :? остановить выполнение с ошибкой, если переменной нет. echo ${MISS:?is required} bash: MISS: is required Код выхода будет 1. #tricks#linux

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What is sGIFT and how to make money on it? 🎁sGIFT is an index of the 15 largest Telegram gifts, compiled from transactions on top marketplaces, cleaned from noise and wash trades. Trade with leverage up to ×3, in $USDT or $TON, with a 1% commission and OI up to $50K in each direction. It is also worth mentioning the risks: experimental methodology, possible high volatility, and order failures. ⚙️What’s under the hood of sGIFT? 🟠Normalized price: sale_price/(1+platform_fee_pct) — to remove bias caused by fees. 🟠Outlier filtering: transactions with price >3× or <0.33× of floor (≤0.1% of cases) are excluded; then data outside ±3 σ from the mean are removed. 🟠 Top 15 collections by capitalization: from plush pepe to vintage cigar, with a “penalty” weight given to a new collection for a week to smooth the spike. 🟠 Statistical data processing: weight = MCAP (median “cleaned” price × supply) / sum of MCAP of all 15, weight changes are stretched over 24 hours. 🟠Dynamics: recalculated in USDT in real time at each TON/USDT oracle tick. More about the index: article ❓How to make money on it: 3 practical cases 1. A new collection is released → short signal🌡 The launch of a new gift collection is usually accompanied by a surge of activity around it, but if it is not included in the index, it will most likely cause an outflow from old collections: selling one Plush Pepe or Durov's Cap and buying a couple dozen new items sounds reasonable. This is a signal to open a short, expecting a correction. 2. Update of 5 collections released → short signal🌡 After a major update of several popular collections, new gifts come into focus, buying/selling happens mainly on them, which reduces interest in old collections. The index reacts with a drop — we catch the moment for a short. 3. Profile with 1000 gifts blocked → long signal🧪 If Telegram moderation blocks a channel-marketplace with a large collection (say with 1000 NFTs in the profile), the total liquid volume on the market decreases, the index lacks “cheap” lots — the index price starts to rise. We open a long. 💵 Your ideas for using the index? #StormTrade#TelegramGift#PlushPepe#Tonnel#MRKT#Portals 🚀Web | Mini-app | Chat | Channel