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: #keepsgclean
@NEASingapore · Post #1227 · 12.01.2026 г., 01:03
Let’s unlock all your Rat-Dex discoveries! Spot the signs early so we can stop them before they multiply. Help your neighbourhood stay rat-free by reporting signs of rat activity through the OneService app. #KeepSGClean
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@NEASingapore · Post #1223 · 04.01.2026 г., 01:02
Don’t dump furniture at void decks or common areas. 🏢 HDB → Contact your Town Council 🏠 Private estate → Contact a public waste collector Bulky items deserve proper disposal—keep our shared spaces safe & clean 🌍💚 #KeepSGClean
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@NEASingapore · Post #1212 · 28.12.2025 г., 00:54
This season is giving zero pesty problems. Clear your picnic so pests don’t join the celebration. 🧺✨ #KeepSGClean
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@NEASingapore · Post #1202 · 22.12.2025 г., 09:25
Cups and containers left behind in our shared spaces can trap water and turn into mozzie breeding spots. Pack up your litter, throw them into the bin and #KeepSGClean!
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@NEASingapore · Post #1196 · 18.12.2025 г., 01:01
Trash belongs inside the bin! Anywhere else is just messy and mad cringe. #KeepSGClean
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@NEASingapore · Post #1186 · 08.12.2025 г., 02:47
High-rise litter isn’t just messy; it’s dangerous. Let’s keep our shared spaces safe and clean. If you spot litterbugs, report them via the OneService app with details like date, time and location. #KeepSGClean
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@NEASingapore · Post #1177 · 01.12.2025 г., 00:31
The answer: All of the above! ✅ No access to excess food or food waste = no pesky rats! Let’s do our part to #KeepSGClean✨
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@NEASingapore · Post #1156 · 25.10.2025 г., 02:04
Barbecue parties are fun, but piles of litter after aren’t. Food scraps & waste attract pests and make shared spaces unpleasant. Let’s do our part and bin our waste. Spot someone leaving a mess? Report via the OneService app with date, time & exact location. Let’s keep our chill spots truly chill! #KeepSGClean
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@NEASingapore · Post #1150 · 18.10.2025 г., 01:30
The food slapped 😋, but your leftovers? Not so much. Improper disposal of food waste = pests, smells, and fines up to $2,000. Let’s clear our mess before we leave and report littering via the OneService app with details such as date, time and precise location. #KeepSGClean
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@NEASingapore · Post #1141 · 04.10.2025 г., 01:01
Your game might be 🔥 but leaving trash behind in public sports facilities is a major foul. Offenders can be fined up to $2,000 for first-time littering. If you spot litterbugs, report them via the OneService app with details such as date, time and precise location. Let's keep our public sports facilities clean for everyone's game! #KeepSGClean
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@NEASingapore · Post #1139 · 27.09.2025 г., 01:01
Pests, like rats, love their new homes within bulky waste. Do you? 🐀 To rid them of their new homes, keep public spaces clear of food and clutter! HDB: Contact your Town Council Private homes: Engage licensed collector 👉go.gov.sg/licensed-waste-collectors Spot bulky waste left in common areas? Report via the OneService app with details such as date, time and precise location (block stack or column). Together, let’s #KeepSGClean!
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@NEASingapore · Post #1131 · 18.09.2025 г., 01:04
Clean spaces protect our peace of mind ✨ Dispose of waste responsibly and help keep our shared areas uplifting for all. Witness littering? Report it via the OneService app with details such as date, time and precise location. Together, let’s #KeepSGClean!
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