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Изворен канал @pythonotes · Post #239 · 3 мај

Один из самых удобных способов записать данные это использование готовых форматов, такие как JSON или YAML. Из плюсов такого подхода стоит отметить вот что: 🔸 готовый, повсеместно используемый и поддерживаемый формат 🔸 простой и понятный файл, удобочитаемый для человека 🔸 можно легко редактировать в любом текстовом редакторе без специальных программ и библиотек Но есть и минусы 🔹 затраты времени при записи файла (кодирование данных в нужный формат строки) 🔹 затраты времени при чтении файла (декодирование данных в Python объекты) 🔹 размер файла увеличивается из-за разметки данных (скобки, запятые, переносы, отступы...) 🔹 перед записью все данные должны быть помещены в память в полном объёме (не всегда) 🔹 при чтении необходимо считать весь файл в память и только потом декодировать данные Если нужно писать немного данных в несколько файлов, то затраты по времени не ощутимы. Обычно это файлы конфига или какие-либо метаданные. Это отличный вариант под такие задачи. Есть и другой поход к записи файлов - это бинарные файлы. Используется, когда данных достаточно много и никто их не собирается читать глазками😳. 🔸 очень быстрая запись 🔸 чтение значительно быстрей чем JSON, YAML итд 🔸 размер файла значительно меньше, так как нет разметки 🔸 можно записывать данные по мере поступления не загружая всё в память 🔸 можно извлечь любую часть данных независимо Из минусов 🔹 нужно определить свой формат записи данных (если не используете готовую спецификацию определённого формата) 🔹 не получится открыть файл и визуально понять что там записано, а для чтения файла потребуется знать его спецификацию. 🔹 не так-то просто создать такой файл без специальной библиотеки В таком виде удобно записывать большой массив любых однородных данных. Например, мониторинг валютной биржи или кэшированная анимация 3D геометрии. (Это не означает что нельзя записать данные разного типа, просто это будет не так удобно) Представьте себе JPG-картинку. По сути это немного мета-информации и большой массив пикселей. Тоже самое со звуком или видео файлом. Поэтому, если вы попробуете открыть картинку в текстовом редакторе вы увидите что-то вроде такого f15d cd29 a564 4578 ... 09e2 9bc4 a696 1253 ... 84e9 4de1 3b23 c24a ... 2534 5161 28e0 709d ... ... Это и есть записанные байтики. И для их чтения требуется определённый софт который знает что с ними делать. Под каждый тип файла. К чему это я? Читайте в следующем посте... #tricks#basic

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Crypto M - Crypto News

@CryptoM · Post #64487 · 09.04.2026 г., 02:45

🚀 Goldman Sachs Revises Oil Price Forecasts for Second Quarter Goldman Sachs has adjusted its oil price forecasts for the second quarter, citing changes in risk premiums and increased crude flow through the Suez Canal. According to BlockBeats, the financial institution has lowered its Brent crude price prediction to $90 per barrel and its West Texas Intermediate (WTI) crude forecast to $87 per barrel as of April 9. #GoldmanSachs#OilPriceForecasts#BrentCrude#WTICrude#SuezCanal#CrudeFlow#RiskPremiums#April2026

Crypto M - Crypto News

@CryptoM · Post #65223 · 12.04.2026 г., 04:14

🚀 Sky Co-Founder Rune Faces Losses in Leveraged Oil and S&P 500 Positions Sky co-founder Rune's leveraged positions have recently experienced significant losses. According to Odaily, data from Hyperbot indicates that Rune's sevenfold leveraged short position on the Nasdaq 100 was closed 16 hours ago. Currently, he holds long positions valued at approximately $518,000, including a 20-fold leveraged long position in WTI crude oil futures and a sevenfold leveraged position in Brent oil. Additionally, Rune maintains a 20-fold leveraged short position on the S&P 500, valued at $159,000. At present, all of Rune's positions are in a loss state, with the total value dropping to around $678,000, reflecting a floating loss of approximately $61,000 and an investment return rate of -22.68%. Rune initially entered these positions last month when oil prices were rising, achieving a floating profit exceeding $1 million. However, recent fluctuations and declines in oil prices have turned these positions from profit to loss. #Sky#Rune#LeveragedTrading#OilFutures#SP500#Nasdaq100#FinancialLoss#WTICrude#BrentOil#Investing#SKY

Crypto M - Crypto News

@CryptoM · Post #64545 · 09.04.2026 г., 07:14

🚀 Whale Adjusts Investment Strategy Across Major Markets On April 9, a significant investor, known for substantial positions in three major markets, closed all long positions in WTICRUDE and BRENTOIL, according to BlockBeats. Previously, the combined holdings in these oils exceeded $14.1 million, resulting in a loss of over $3.9 million upon closure. Following this, the investor opened a short position in WTICRUDE at an average price of $92.3, with a current scale of $9.3 million and a liquidation price of $117.6. This adjustment has led to the following main positions across the three markets: In U.S. stocks, the investor holds long positions in the Nasdaq 100 and S&P 500, with a scale of $38.1 million and an unrealized profit of $430,000. In the cryptocurrency market, the investor maintains a long position in Bitcoin, with a scale of $12.05 million at an average price of $6,540, resulting in an unrealized profit of $30,000. In commodities, the investor's short position in WTI crude oil stands at $9.3 million, with an unrealized loss of $290,000. The address associated with these transactions is 0x8af700ba841f30e0a3fcb0ee4c4a9d223e1efa05. #Investment#MarketStrategy#WTICrude#BrentOil#USStocks#Nasdaq100#SP500#Bitcoin#Cryptocurrency#Commodities#Trading#Blockchain#BlockBeats#BTC

Crypto M - Crypto News

@CryptoM · Post #64519 · 09.04.2026 г., 05:45

🚀 U.S. Crude Oil Exports Surge Amid Middle East Supply Disruptions U.S. crude oil exports are projected to reach 5.2 million barrels per day in April, marking a nearly one-third increase from March's 3.9 million barrels per day. According to Odaily, this surge is driven by Asian customers seeking alternatives to Middle Eastern oil supplies disrupted by the Iran conflict. Demand from Asian clients has risen by 82% to 2.5 million barrels per day. Data from oil research firm Kpler indicates that 68 empty tankers are currently en route to the U.S., compared to 24 in the week before the conflict began on February 28, and an average of 27 last year. The U.S. and Iran announced a two-week ceasefire on Tuesday, but tensions remain high as Iran declared the closure of the Strait of Hormuz on Wednesday following an Israeli attack on Lebanon. Previous blockades had caused U.S. oil prices to soar by over 50%, with WTI crude surpassing $110 per barrel earlier this week, maintaining a level more than 40% higher than before the conflict. In response, the Trump administration has announced the release of over 170 million barrels of oil from the Strategic Petroleum Reserve to stabilize fuel prices. Despite these efforts, U.S. gasoline prices have exceeded $4 per gallon for the first time in four years. #USCrudeOilExports#MiddleEastSupplyDisruptions#IranConflict#AsianOilDemand#WTICrude#StrategicPetroleumReserve#OilPrices#GasolinePrices#OilResearch#StraitOfHormuz#TrumpAdministration

Crypto M - Crypto News

@CryptoM · Post #64831 · 10.04.2026 г., 02:57

🚀 Economist Predicts Brent-WTI Price Spread to Normalize if US-Iran Ceasefire Holds Economist Hamad Hussain from Capital Economics has stated that the recent ceasefire agreement between the United States and Iran could lead to a normalization of the price spread between Brent and WTI crude oil contracts. According to Jin10, Brent crude typically trades at a premium over WTI crude, but this pattern has been disrupted since the recent conflict began. Hussain noted that the current inverted spread measures the price difference between Brent futures for June delivery and WTI futures for May delivery, with differing contract expiration dates. However, he mentioned that due to significant tightening in the oil market caused by Middle Eastern supply disruptions, and expectations of supply easing in the coming months, the premium of WTI over Brent has widened. #Economist#BrentWTIPriceSpread#USIranCeasefire#CrudeOil#HamadHussain#CapitalEconomics#OilMarket#BrentCrude#WTICrude#MiddleEasternSupply#OilPremium#SupplyDisruptions#OilMarketNormalization

Crypto M - Crypto News

@CryptoM · Post #64554 · 09.04.2026 г., 07:45

🚀 Abraxas Capital's Oil Short Positions Recover Following Ceasefire Announcement On April 9, Hyperinsight reported significant financial recovery for Abraxas Capital, a major oil short institution on the Hyperliquid platform. According to BlockBeats, the recovery occurred within a week following the announcement of a ceasefire, with funds rebounding by over $12 million. The combination of oil shorts and crypto longs, which previously faced a floating loss of $9.7 million, has now turned profitable. As of the latest update, the two addresses continue to synchronize profit-taking and position reduction, maintaining a floating profit of $8.7 million. Following the recent reduction in positions, the total holding size remains at $152 million. This includes approximately $126 million in short positions on U.S. and Brent crude oil, and $26.1 million in long positions in the crypto market. Details of the oil short positions are as follows: Brent Oil shorts (5x leverage) have decreased from $92 million to $78 million, with an average price of around $96. WTI Crude shorts (5x leverage) have reduced from $51 million to $48.5 million, with an average price of approximately $95. Addresses involved are 0x5b5d51203a0f9079f8aeb098a6523a13F298C060 and 0xb83de012dba672c76a7dbbbf3e459cb59d7d6e36. #AbraxasCapital#OilShortPositions#CeasefireAnnouncement#FinancialRecovery#Hyperinsight#BlockBeats#CryptoLongs#ProfitTaking#WTICrude#BrentOil#OilMarket#LeverageTrading#PositionReduction#FloatingProfit#CryptoMarket#U.S.Crude