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: #alquds
@palestineresist · Post #93240 · 05.04.2026 г., 19:09
IOF soldiers were documented brutally assaulting a young man near Qalandia camp, north of #AlQuds. Zionist soldiers took turns severely beating the individual during the attack.
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@rnn_archive · Post #446 · 02.07.2023 г., 17:30
Today marks the somber ninth anniversary of the martyrdom of Mohammed Abu Khdeir at the hands of zionist settlers. 16-year-old Mohammed was kidnapped by a horde of settlers in #AlQuds on July 2nd, 2014, one of the early days of Ramadan. As he was preparing his pre-fast meal before the break of dawn, a group of settlers grabbed him and drove away. Mohammed was subsequently tortured, beaten with tools and forced to drink gasoline. The final act of violence perpetrated against him is as sickening as it is infuriating: doused with gasoline, Mohammed was set on fire. The depravity of zionism knows no bounds. Mohammed's case is one of countless crimes perpetrated against our people from the moment that the first settler stepped onto our land. It is a crime emblematic of the essence of zionism itself, in its racism, sadism, and hatred. Glory to our martyrs, and may they all be avenged.
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@RNN_Backup · Post #64431 · 25.10.2024 г., 09:44
🚨 Footage documents zionist soldiers targeting and shooting children yesterday in the town of Biddu, northwest of #AlQuds. Following the wounding of the child, the IOF abducted him. The barbaric crimes of the occupation carried out against children, women, men, and the elderly are escalating in the occupied West Bank and the #Gaza Strip, accompanied by a deafening silence from the international community and their refusal to hold the occupation accountable for their ongoing crimes.
@RNN_Backup · Post #64453 · 25.10.2024 г., 10:01
🚨 13-year-old Iyad Ashraf Da'is from #AlQuds was released today from occupation prisons after 7 month of detention with the marks of zionist torture and medical negligence against the prisoners clear on his body. Iyad suffers from severe scabies due to the deliberate inhumane measures taken by the occupation administration against the prisoners as part of collective revenge against them. He was also sentenced to house arrest and his ankle was fitted with an electronic bracelet and was banned from Al-Quds to Taybeh. Iyad was arrested on March 27 from his home in Shu'fat, occupied #AlQuds. #FreeThemAll
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@RNN_Backup · Post #62684 · 12.10.2024 г., 21:24
🚨 The IOF and armed settlers conducted a series of aggressions across the West Bank today: Armed settlers attacked farmers in the village of Al-Mughayyir in #Ramallah and prevented them from harvesting olives. (media 1,2) Settlers also cut down olive trees in the village of Yasuf, east of #Salfit (media 3,4). The IOF invaded the town of Beita, south of #Nablus, where confrontations erupted between resistance youth and the zionist forces. (media 5,6,7). The IOF fired live bullets heavily at Palestinian homes at the entrance of Al-Arroub refugee camp, north of #AlKhalil. (media 8,9) The IOF invaded Shufat refugee camp in #AlQuds. (media 10)