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Изворен канал @pythonotes · Post #32 · 7 фев.

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Скорее всего уже слышали, что складывать строки через + это плохая практика. Падение производительности, и всё такое. Без лишних слов, давайте измерять: from timeit import timeit def t1(): # складываем 10 строк через + из переменной t = 'text' for _ in range(1000): s = t + t + t + t + t + t + t + t + t def t2(): # склеиваем список строк через метод join arr = ['text'] * 10 for _ in range(1000): s = ''.join(arr) def t3(): # складываем через + но не из переменной а непосредственно инлайн объекты for _ in range(1000): s = 'text' + 'text' + 'text' + ... # всего 10 раз Теперь каждую строку склейки запустим по 10М раз >>> timeit(t1, number=10000) 0.21951690399964718 >>> timeit(t2, number=10000) 1.4978306379998685 >>> timeit(t3, number=10000) 0.2213820789993406 Хм, а нам говорили что через "+" это плохо и медленно ))) 😁 Тут стоит учитывать, что речь идёт о склейке множества длинных строк. Давайте изменим условия: def t4(): t = 'text'*100 for _ in range(1000): s = t + t + t + t + t + t + t + t + t def t5(): arr = ['text'*100] * 10 for _ in range(1000): s = ''.join(arr) def t6(): for _ in range(1000): s = 'text'*100 + 'text'*100 + ... # всего 10 раз >>> timeit(t4, number=10000) 12.795130728000004 >>> timeit(t5, number=10000) 2.642637542999182 >>> timeit(t6, number=10000) 0.2184546610005782 Вот, уже другой разговор, сразу видна разница, в среднем в 6 раз. Но погодите, почему последний тест t6() по скорости такой же как и t3()? Ведь строки теперь в 100 раз длиннее! Это вопросы оптимизации кода, какие простые изменения ускоряют или замедляют выполнение программы. Мы столкнулись с примером обхода обращения к переменной. Например, именно так работает директива #define в С++, во время компиляции подставляя значение переменной вместо ссылки на неё. В Python это тоже работает, но часто ли вы сможете встретить такой способ работы со строками? К сожалению, способ почти только теоретический. В целом, тесты показали то, что мы хотели. Делаем выводы самостоятельно. Полный листинг 🌍 #tricks

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Пронајдени 20 слични објави

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Coin Sonar

@CoinSonar · Post #243385 · 17.04.2026 г., 00:54

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#LAYER | Volume spike (USDT PAIR) 31 times the average volume 129.36K USDT traded in 15 min └Buying vol: 81.42K USDT 🟢 Boost score: 4/10 24h Vol: 394.58K USDT (Binance) Price: 0.0902 (-1.2% in 24h)

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Pump Leaks

@pumpleaks · Post #678 · 06.01.2024 г., 00:36

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Pump Result: One of the best pumps we’ve had. The volume crossed an unprecedented $3.2 million in the first 15 minutes, catapulting #LAYER to our 10x target (957%) and making all of our members huge profits, that’s exactly why we’re the best in the world. Our coin held as the top gainers for hours after our signal, demonstrating the real power of our whales and market makers. Even though we saw a huge volume of external selling (very likely coming from the coin team), we truly delivered on the expected exceptional first pump of the year, and things are just going to get better from here. We’re still receiving an overwhelming amount of gratitude messages from members that scored big, and asking for our next pump. No stress, enjoy the profits, we’ll announce it soon. In the meantime, we’re focusing our efforts on never used before marketing strategies to bring in over 1 million new members for our next Kucoin Mega Pump, which will absolutely dwarf anything we’ve seen until now. Stay tuned for our next pump announcement.

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Wall Street Gems

@wallstreetgems · Post #583 · 06.01.2024 г., 00:37

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Pump Result: One of the best pumps we’ve had. The volume crossed an unprecedented $3.2 million in the first 15 minutes, catapulting #LAYER to our 10x target (957%) and making all of our members huge profits, that’s exactly why we’re the best in the world. Our coin held as the top gainers for hours after our signal, demonstrating the real power of our whales and market makers. Even though we saw a huge volume of external selling (very likely coming from the coin team), we truly delivered on the expected exceptional first pump of the year, and things are just going to get better from here. We’re still receiving an overwhelming amount of gratitude messages from members that scored big, and asking for our next pump. No stress, enjoy the profits, we’ll announce it soon. In the meantime, we’re focusing our efforts on never used before marketing strategies to bring in over 1 million new members for our next Kucoin Mega Pump, which will absolutely dwarf anything we’ve seen until now. Stay tuned for our next pump announcement.

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#layer
Pepe Pumps Signals

@pepe_pumps_signals · Post #293 · 06.01.2024 г., 00:36

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Pump Result: One of the best pumps we’ve had. The volume crossed an unprecedented $3.2 million in the first 15 minutes, catapulting #LAYER to our 10x target (957%) and making all of our members huge profits, that’s exactly why we’re the best in the world. Our coin held as the top gainers for hours after our signal, demonstrating the real power of our whales and market makers. We truly delivered on the expected exceptional first pump of the year, and things are just going to get better from here. We’re still receiving an overwhelming amount of gratitude messages from members that scored big, and asking for our next pump. No stress, enjoy the profits, we’ll announce it soon. In the meantime, we’re focusing our efforts on never used before marketing strategies to bring in over 1 million new members for our next Kucoin Mega Pump, which will absolutely dwarf anything we’ve seen until now. Stay tuned for our next pump announcement.

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#layer
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