Најди сличен содржај

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

Hashtags

#define #tricks

Резултати

Пронајдени 2 слични објави

Пребарај: #publicoversight

当前筛选 #publicoversight清除筛选

EKOLOG.UZ| ENG

@ekologuzenglish · Post #11054 · 03.01.2026 г., 10:00

Најди слично Погледај

📢 Official Statement According to information shared on our Telegram channel, the situation in front of House No. 69, Beruniy Street, Samarkand caused serious dissatisfaction among local residents. For a long time, the household waste collection area was not cleaned, and the containers were not emptied regularly. As a result, the surrounding environment deteriorated, trash spread around, unpleasant odors appeared, and sanitary standards were violated. ✅ Actions taken: The area in front of House No. 69 on Beruniy Street has been completely cleaned. “Maroqand Obod” LLC will ensure timely waste removal and monitor the area regularly. 🟢 Note: Thanks to residents’ complaints and public oversight, prompt measures were taken. Maintaining a clean environment is important for every citizen. #Samarkand#CleanCity#WasteManagement#PublicOversight☘️Read the latest environmental news on the @ekologuz page. Follow us and send your suggestions and wishes via @eklguz_bot Instagram | Facebook | Twitter | Sayt | Youtube.

Hashtags

#samarkand #cleancity #wastemanagement #publicoversight

EKOLOG.UZ| ENG

@ekologuzenglish · Post #11357 · 28.01.2026 г., 09:59

Најди слично Погледај

⚠️ ECOLOGICAL VIOLATIONS ARE BEING IGNORED! As of January 25, 2026, the activities of LLC “Ko‘mir Ta’minoti” of Jizzakh region, particularly the Dashtabod coal storage facility, continue to cause direct harm to local residents, while grossly violating environmental and sanitary regulations. Unfortunately, this company continues to operate without complying with basic environmental standards. Coal dust, air pollution, and the absence of protective measures have become a daily problem for the surrounding community. These violations have been reported several times on our Telegram channel. 📌 Most concerning is the fact that: Since December 2025, residents and public representatives have repeatedly submitted official complaints to the responsible authorities, yet: — no effective action has been taken, — no fines have been imposed, — no official explanations have been provided to the public. ❗️ This raises serious questions: Why are environmental violations going unpunished? Why is public health being ignored? We, as citizens and representatives of civil society, demand an urgent review of this situation and request written, official information regarding: — the identified violations, — the measures taken in response, — the fines imposed (or not imposed) on this enterprise. 🟢 Environmental protection is not a formality. 🟢 It is a matter of human health, children’s future, and the right to a clean environment. Responsible authorities must not remain silent. The public will continue to closely monitor this case. #Ecology #EnvironmentalViolations #Dashtabod #Jizzakh #PublicHealth #PublicOversight☘️Read the latest environmental news on the @ekologuz page. Follow us and send your suggestions and wishes via @eklguz_bot Instagram | Facebook | Twitter | Sayt | Youtube.

Hashtags

#ecology #environmentalviolations #dashtabod #jizzakh #publichealth #publicoversight