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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 #65112 · 11.04.2026 г., 03:11

🚀 Middle East Conflict Influences Commodity Price Fluctuations, Citic Securities Reports Citic Securities has released a report indicating that since March 2026, conflicts in the Middle East have led to rotational movements in commodity prices. According to Jin10, there is a strong expectation for an increase in energy and chemical product prices, while some basic metals have experienced price adjustments due to concerns over global economic growth slowdown affecting demand. Looking ahead to the second quarter, the duration of the Middle East conflict may become a significant factor influencing commodity price volatility. If the conflict persists, the price logic observed since March is likely to strengthen further. Conversely, if the conflict ends, demand-side factors may dominate price changes across different commodities. Overall, Citic Securities remains optimistic about the performance of energy and chemical product prices in the second quarter. Additionally, attention is drawn to lithium carbonate and electrolytic aluminum, which are supported by supply disruptions and strong demand. #MiddleEastConflict#CommodityPrices#EnergyPrices#ChemicalProducts#Metals#EconomicGrowth#LithiumCarbonate#ElectrolyticAluminum#PriceVolatility#CiticSecurities

Crypto M - Crypto News

@CryptoM · Post #65333 · 13.04.2026 г., 00:13

🚀 PRECIOUS METALS | U.S. Inflation and Fed Rate Cut Expectations Impact Gold Prices On April 13, Jin10 reported that a research note from CITIC Securities highlighted the significant rise in U.S. overall inflation for March, driven by soaring oil prices, while core inflation remained moderate. According to Jin10, CITIC Securities anticipates minimal risk of secondary inflation in the U.S. and suggests that April's CPI may continue to show elevated growth due to compensatory increases in rental inflation. If oil prices decline slowly, U.S. CPI could remain above 3% year-on-year for the rest of the year. CITIC Securities also forecasts a 25 basis point rate cut by the Federal Reserve within the year, which may lead to a weaker U.S. dollar in the near term. This scenario could create liquidity-driven recovery opportunities for gold prices. Additionally, U.S. equities might benefit from improved risk appetite, while U.S. Treasury yields may lack sufficient downward momentum due to economic fundamentals. #PreciousMetals#USInflation#FedRateCut#GoldPrices#CITICSecurities#OilPrices#CoreInflation#CPI#USDollar#USEquities#USTreasuryYields

Crypto M - Crypto News

@CryptoM · Post #64794 · 10.04.2026 г., 00:15

🚀 U.S. Employment Growth in March Exceeds Expectations, Citic Securities Reports On April 10, Citic Securities highlighted that U.S. employment showed marginal improvement in March, according to non-farm payroll data. According to Jin10, the U.S. added 178,000 non-farm jobs in March, surpassing expectations, partly due to short-term disruptions being resolved. While the employment growth structure improved compared to February, many industries still experienced low growth. Citic Securities noted that if the U.S.-Iran conflict persists, it could pressure the global supply chain, potentially affecting U.S. employment in the future. However, the current inflationary pressures are limiting the Federal Reserve's ability to cut interest rates. #USEmployment#JobGrowth#NonFarmPayroll#CiticSecurities#EconomicReport#USJobs#Inflation#FederalReserve#GlobalSupplyChain#USIranConflict

Crypto M - Crypto News

@CryptoM · Post #65243 · 12.04.2026 г., 08:27

🚀 Iran's Nuclear Concessions Could Be Key to U.S. Strategy, Citic Securities Says Citic Securities stated on April 12 that if Iran were to abandon uranium enrichment, it would represent a significant achievement for the U.S., particularly for U.S. President Donald Trump, who could use it to appease domestic concerns. According to Jin10, the ongoing conflict has already negatively impacted the midterm elections, necessitating a swift resolution. Since the Iranian Islamic Revolution, the U.S. has lost control over Iran's nuclear capabilities, a challenge that has persisted through multiple U.S. presidencies, affecting America's Middle East strategy. The political impact of Iran's potential nuclear disarmament is seen as more significant than the indirect effects of oil prices and inflation on elections. Consequently, the Trump administration might consider compromises on issues like control over the Strait of Hormuz. From Iran's perspective, the conflict has demonstrated that blocking the strait and threatening Middle Eastern infrastructure are powerful leverage tools, potentially more impactful than nuclear threats. These actions, which can be executed with low-cost drones, pose significant risks to the U.S. and global economies, providing Iran with a strategic counterbalance. Repeated near-escalations to large-scale infrastructure damage suggest that the likelihood of extreme war escalation is low, reducing the chances of extreme oil prices, severe recession, or stagflation. #Iran#NuclearConcessions#USStrategy#CiticSecurities#DonaldTrump#UraniumEnrichment#MiddleEastStrategy#IranUSRelations#StraitOfHormuz#OilPrices#Inflation#PoliticalImpact#TrumpAdministration#IranianLeverage#GlobalEconomy#InfrastructureDamage#WarEscalation#OilPrices#Stagflation

Crypto M - Crypto News

@CryptoM · Post #65257 · 12.04.2026 г., 11:28

🚀 STOCKS | Citic Securities Predicts A-Share Market Recovery Amid Improved Conditions On April 12, Jin10 reported that Citic Securities released a research note indicating a recovery trend in the A-share market this week. According to Jin10, this improvement is attributed to enhanced market risk appetite, liquidity, and fundamentals. Looking ahead, while the pace of growth may slow, the market is expected to continue its upward trajectory in the short term, with medium-term risks posed by sustained high oil prices. April is anticipated to see a return to fundamentals, with a focus on first-quarter reports and identifying promising industries. Industry allocation should center on sectors with high first-quarter prosperity, marginal fundamental improvements, and those benefiting from policy, low allocation levels, and seasonal demand. Key sectors to watch include resources (gold, energy metals, aluminum, minor metals), AI (optical communication, fiberglass, gas turbines), lithium batteries (battery and lithium materials), oil transportation, chemical raw materials, brokerage firms, coal, general equipment, infrastructure construction, and service consumption. #STOCKS#Ashare#MarketRecovery#CiticSecurities#Liquidity#RiskAppetite#Fundamentals#OilPrices#IndustryAllocation#Resources#Gold#EnergyMetals#Aluminum#MinorMetals#AI#OpticalCommunication#Fiberglass#GasTurbines#LithiumBatteries#BatteryMaterials#LithiumMaterials#OilTransportation#ChemicalRawMaterials#Brokerage#Coal#GeneralEquipment#InfrastructureConstruction#ServiceConsumption