TGINSIGHT SIMILAR POSTS
Изворен канал @pythonotes · Post #32 · 7 фев.
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
Пребарај: #lava
@pixelexperience · Post #7506 · 14.11.2022 г., 16:18
➡️New build available for Xiaomi Redmi 9 Prime / Poco M2 (lava) 👤 by Sakthivel Nadar ℹ️ Version: 13 (Plus edition) 📆 Build date: November 14, 2022 05:23 📂 File size: 1.63 GB ⬇️ Download now #lava#pixelexperience
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@pixelexperience · Post #7505 · 14.11.2022 г., 16:18
➡️New build available for Xiaomi Redmi 9 Prime / Poco M2 (lava) 👤 by Sakthivel Nadar ℹ️ Version: 13 📆 Build date: November 14, 2022 05:22 📂 File size: 1.62 GB ⬇️ Download now #lava#pixelexperience
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@bestwallpapes · Post #3104 · 30.11.2024 г., 12:21
@Bestwallpapes #Volcano#Lava
@cosmomyst · Post #160 · 20.08.2025 г., 03:11
🪐 The exoplanet 55 Cancri e, orbiting a star about 41 light-years away in the constellation Cancer, is known for its fiery dayside, reaching temperatures above 2,400°C—hot enough to melt metal. This rocky world is likely covered by a massive ocean of molten lava, and some scientists think its carbon-rich composition could even mean parts of the planet’s interior are made of diamond. ✨ #exoplanets⚡#extremes⚡#lava⚡#nasa⚡#galaxy⚡#stars⚡#astronomy⚡#universe⚡#cosmos⚡#space 👉subscribe Universe Mysteries
@cosmomyst · Post #87 · 06.08.2025 г., 00:11
🪐 Far from Earth, the exoplanet COROT-7b endures some of the most extreme conditions known: it orbits its star so closely that its surface reaches about 2,000°C, hot enough to melt rock. Scientists believe this heat turns the planet’s rocky crust into a vast, bubbling “lava ocean,” creating a world where rock vaporizes into the atmosphere and rains down as pebbles. ✨ #exoplanet⚡#extremes⚡#lava⚡#nasa⚡#galaxy⚡#stars⚡#astronomy⚡#universe⚡#cosmos⚡#space 👉subscribe Universe Mysteries
@reutersworldchannel · Post #149166 · 09.10.2021 г., 18:20
Lava in Spain's La Palma engulfs more houses Lava engulfed more buildings on the Spanish island of La Palma, destroying everything in its path about three weeks after the volcano began to erupt #News#Reuters#LaPalma#Spain#Lava Subscribe: http://smarturl.it/reuterssubscribe Reuters brings you the latest business, finance and breaking news video from around the globe. Our reputation for accuracy and impartiality is unparalleled. Get the latest news on: http://reuters.com/ Follow Reuters on Facebook: https://www.facebook.com/Reuters Follow Reuters on Twitter: https://twitter.com/Reuters Follow Reuters on Instagram: https://www.instagram.com/reuters/?hl=en ➖@reutersworldchannel➖
@reutersworldchannel · Post #149482 · 17.10.2021 г., 14:37
Spain's volcano is still erupting, no end in sight There's no end in sight to the volcanic eruption that has caused chaos and destruction on the Canary island of La Palma since it began about a month ago #News#Reuters#LaPalma#Spain#Lava#Volcano Subscribe: http://smarturl.it/reuterssubscribe Reuters brings you the latest business, finance and breaking news video from around the globe. Our reputation for accuracy and impartiality is unparalleled. Get the latest news on: http://reuters.com/ Follow Reuters on Facebook: https://www.facebook.com/Reuters Follow Reuters on Twitter: https://twitter.com/Reuters Follow Reuters on Instagram: https://www.instagram.com/reuters/?hl=en ➖@reutersworldchannel➖
@Wallpaper_Prime · Post #24388 · 30.01.2026 г., 11:29
#фэнтези#планеты#лава#fantasy#planets#lava ⭐️ «Wallpaper Prime» ⭐️
@reutersworldchannel · Post #149186 · 10.10.2021 г., 17:22
LIVE: Building-sized lava blocks fall from volcano on Spain's island La Palma Blocks of molten lava as large as three-story buildings rolled down a hillside on the Spanish island of La Palma on Sunday while a series of tremors shook the ground three weeks after the volcano erupted. #News#Reuters#Live#volcano#lava#LaPalma#Spain Subscribe: http://smarturl.it/reuterssubscribe Reuters brings you the latest business, finance and breaking news video from around the globe. Our reputation for accuracy and impartiality is unparalleled. Get the latest news on: http://reuters.com/ Follow Reuters on Facebook: https://www.facebook.com/Reuters Follow Reuters on Twitter: https://twitter.com/Reuters Follow Reuters on Instagram: https://www.instagram.com/reuters/?hl=en ➖@reutersworldchannel➖
@reutersworldchannel · Post #149418 · 15.10.2021 г., 17:11
LIVE: Lava spreads on Spain's La Palma with no end in sight to volcanic eruption Flows of molten rock pour from the Cumbre Vieja volcano — in its fourth week of eruption — threatening to engulf another area on the Spanish island of La Palma. #News#Reuters#Live#volcano#lava#LaPalma#Spain#environment Subscribe: http://smarturl.it/reuterssubscribe Reuters brings you the latest business, finance and breaking news video from around the globe. Our reputation for accuracy and impartiality is unparalleled. Get the latest news on: http://reuters.com/ Follow Reuters on Facebook: https://www.facebook.com/Reuters Follow Reuters on Twitter: https://twitter.com/Reuters Follow Reuters on Instagram: https://www.instagram.com/reuters/?hl=en ➖@reutersworldchannel➖
@reutersworldchannel · Post #149415 · 15.10.2021 г., 16:20
LIVE: Drone captures view of La Palma's Cumbre Vieja volcano Drone footage shows the impact of the Cumbre Vieja volcano on La Palma, Spain. #News#Reuters#Live#volcano#lava#LaPalma#Spain#environment Subscribe: http://smarturl.it/reuterssubscribe Reuters brings you the latest business, finance and breaking news video from around the globe. Our reputation for accuracy and impartiality is unparalleled. Get the latest news on: http://reuters.com/ Follow Reuters on Facebook: https://www.facebook.com/Reuters Follow Reuters on Twitter: https://twitter.com/Reuters Follow Reuters on Instagram: https://www.instagram.com/reuters/?hl=en ➖@reutersworldchannel➖
@reutersworldchannel · Post #149213 · 11.10.2021 г., 14:34
Lava spews from La Palma volcano The Cumbre Vieja volcano on Spain's La Palma island continues to spew lava and smoke. #Volcano#LaPalma#Spain#Lava#CanaryIslands#CumbreVieja#News#Reuters Subscribe: http://smarturl.it/reuterssubscribe Reuters brings you the latest business, finance and breaking news video from around the globe. Our reputation for accuracy and impartiality is unparalleled. Get the latest news on: http://reuters.com/ Follow Reuters on Facebook: https://www.facebook.com/Reuters Follow Reuters on Twitter: https://twitter.com/Reuters Follow Reuters on Instagram: https://www.instagram.com/reuters/?hl=en ➖@reutersworldchannel➖