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Изворен канал @pythonotes · Post #254 · 11 јун.

Тип строки в Python имеет очень много удобных методов. Сегодня пост про два таких метода которые чаще всего используются "однобоко". Это методы startswith() и endswith() Самый обычный сценарий использования — проверка, начинается ли строка с указанной подстроки? >>> "some_string".startswith("some") True И аналогичная ситуация с зеркальным вариантом этой функции, проверка совпадения с конца >>> "some_string".endswith("some") False Так они используются в большинстве случаев что я видел. Но у этих функций есть еще два варианта использования. 🔸Сравнение нескольких подстрок Для проверки нескольких подстрок в одной строке обычно вызывают эти функции несколько раз. Но на самом деле достаточно передать кортеж со всеми строками один раз. Если будет хоть одно совпадение то функция вернёт True. >>>"my_image.png".endswith(("jpg", "png", "exr")) True 🔸Диапазон поиска Вторым аргументом можно передать индекс символа с которого следует начать сравнение, а третий аргумент это индекс последнего символа. >>> ".filename.ext".startswith("file", 1) True >>> "file_###.ext".endswith('#', 0, -4) True Индексы можно указать отрицательными, что означает отсчёт с конца. #trics#basic

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@finsignal · Post #3295 · 22.06.2024 г., 07:33

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📰 CRYPTO NEWS 🆕️The founder and CEO of #CryptoQuant stated that compared to the previous cyclical peak, the fundamental elements of the bitcoin network can maintain a market value three times higher than the current one. He considers it "possible" to "keep" the bitcoin price at $265,000. 🆕️As part of the presale, #WATER raised $41 million. Which also makes WATER the largest Memecoin pre-sale to date, with over 26,000 wallets participating. The team has regained control of its account in X. 🆕️50 Cent's #Twitter account was hacked in order to promote the Solana Meme Coin. 🆕️Internet Computer will launch the #ICP Hub Accelerator Program 2024, which aims to help early blockchain projects transform their concepts into market solutions, create a strong blockchain innovation ecosystem and promote technological progress in the ICP community. 🔹 21 million #LINKS ($295 million) of non-convertible Chainlink contracts have been unblocked today. 🆕️DAO Osmosis supports a commission-free bridge for transferring bitcoin to the #Cosmos ecosystem. 🆕️Scroll ZKP presents "Scroll Sessions", a loyalty program to reward the Scroll Marks community for their participation and involvement in the #Scroll ecosystem. 🆕️Arbitrum introduces the "Layer Leap", a single-stage bridge from L1 to L3 for the #Orbit ecosystem. 🆕️#Reef plans to launch a new product on June 26. ‼️ Dogwifhat Whales dropped #WIF by 16 million in a week. 🆕️#Fantom has released #Sonic's third management offering, which includes an annual token destruction mechanism, as well as the launch of Sonic Spark and Sonic University. 🆕️#Bluefin announces integration with Wormhole Connect. The Wormhole community will participate in the future release of Bluefin tokens. 🆕️#StacksNakamoto has announced the completion of 90% of the work on the project and is preparing for the official launch on July 15. The Nakamoto Stacks update should increase the transaction speed to 5-10 seconds, which is about 100 times faster than the current speed. ➡️ This is a significant event for the Stacks project and the Bitcoin ecosystem, will improve the speed, overall efficiency and scalability of Layer2 on #Bitcoin, promising faster and more efficient transactions for users.

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