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Изворен канал @pythonotes · Post #401 · 15 дек.
Функция asyncio.wait() это еще один способ вызвать множество асинхронных задач. Она работает в нескольких режимах. 1. Самый простой - ждем завершения всех задач async def main(): tasks = [asyncio.create_task(do_it(i)) for i in range(10)] done, pending = await asyncio.wait( tasks, return_when=asyncio.ALL_COMPLETED ) for task in done: try: print(task.result()) except Exception as e: print(e) Очень похоже на gather, но работает не так. ▫️возвращает не результаты, а два сета с объектами Task у которых можно забрать результат через task.result() если они в списке done ▫️не гарантирует порядок результатов так как оба объекта это set ▫️не выбрасывает исключение когда оно появляется, а сохраняет его в Task. Исключение появится когда попробуете забрать резултьтат. 2. Ждем завершения первой задачи, даже если там ошибка. async def main(): tasks = [asyncio.create_task(do_it(i)) for i in range(3)] done, pending = await asyncio.wait( tasks, return_when=asyncio.FIRST_COMPLETED ) # в done может быть несколько задач! for task in done: try: print(task.result()) except Exception as e: print(f"Fail: {e}") # Оставшиеся задачи в pending, как правило, нужно отменить, иначе они будут продолжать работать for task in pending: task.cancel() В сете done будут таски которые успели завершится, причем как успешно так и нет. 3. До первой ошибки. Тоже самое, но с аргументом FIRST_EXCEPTION done, pending = await asyncio.wait( tasks, return_when=asyncio.FIRST_EXCEPTION ) Функция завершается как только первая задача упадет с ошибкой. Учтите, что в любом случае done вы можете обранужить несколько задач, как с ошибками так и успешные. ↗️ Полный листинг примеров здесь #async
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@trustedairdropsss · Post #101 · 19.09.2020 г., 09:04
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@finsignal · Post #3432 · 01.08.2024 г., 06:55
🙊 “On.. went.. on..” – we are learning to distinguish swear words from terms from the crypto world! Cryptocurrencies are an unusual and challenging market. Over the years, Cryptans have invented many words to describe what is happening around them. And we have compiled a dictionary of the most important of them for you: ➖#Wallets are a key vault for different cryptocurrencies. There is no crypt on the wallet itself, it is located in the blockchain and is assigned to your addresses. Wallets can be "cold" and "hot". ➖#DeFi – decentralized finance. Such crypto projects do not have a specific “manager” or “supervisor”. Interactions between users are managed by smart contracts. ➖#Smart contract - algorithms in the blockchain that control user actions and execute commands and conditions embedded in them. ➖#Proof-of-Work (POW, proof of work) is an algorithm for confirming transactions in the blockchain (achieving consensus) using the computing power of its participants (mining) ➖#Proof-of-Stake (POS, proof of stake) – all transactions in the blockchain are confirmed using cryptocurrency in the wallets of participants ➖#Staking – placement of POS-blockchain tokens in a wallet for a reward. The POS system needs coins to function. A more convenient and effective form is liquid staking. ➖#Gas – payment for transactions on the blockchain. When the activity on the network increases, so does the gas charge. ➖#Fork – updating/changing the blockchain: its technologies and rules ➖#Mixers are platforms that mix tokens of different users, hiding the history of transactions and previous owners. ➖#Bridges (cryptomostes, cross-chain bridges) is a service for transferring crypts from one blockchain to another. Without them, different blockchains and crypto projects cannot communicate with each other. ➖#NFT is a unique digital certificate confirming the ownership of a digital object: anything, but most often a song, a picture, an object from a game. ➖#Stablecoins are coins backed by reliable real assets (dollars, government bonds), and therefore stable in price: 1 to 1 with the dollar. ➖#Memcoins are often coins created “for fun". They are popular among speculators, but some coins “grow up” and try to create full-fledged projects. ➖#Profitability farming is earning money by providing your tokens for trading to other users in liquidity pools on a decentralized crypto exchange. ➖#Airdrop – free distribution of crypto project coins for user activity: try out the project, tell about it on social networks