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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

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@MFARUSSIA · Post #28277 · 07.02.2026 г., 12:02

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🇬🇩 On February 7, #Grenada is celebrating its #IndependenceDay. Originally inhabited by Carib Indians, the island was discovered by Christopher Columbus in 1498. Until 1651, the indigenous people rebuffed the attacks by European colonisers, and even after the island had been taken over by the French, their spirit of independence endured. Proud and freedom-loving, the Caribs refused to submit, and entire tribes, including women and children, threw themselves from cliffs, choosing death over subjugation. The island later came under British rule, with Great Britain bringing in slaves from Africa in an attempt to quell the native people’s resistance. The Grenadian people’s long and arduous path to liberation from British colonial rule culminated in April 1974, when the country joined the Caribbean Community (#CARICOM) and was admitted to the UN in September. Once on the path of independence and socioeconomic progress, Grenada took in stride the challenges it faced, including the US military intervention in 1983, when the United States, in its customary heavy-handed manner, interfered in the internal affairs of the sovereign Grenadian state, seeking to impose a forced change of political leadership and effectively occupy the country. Despite ongoing external pressure, Grenada continues to pursue a sovereign foreign policy acting as a respected and independent member of CARICOM and consistently advocating for the Caribbean to remain a zone of peace. The country is also deepening mutually beneficial cooperation with regional countries, as well as with its numerous partners in Asia and Africa as part of South-South cooperation. 🤝 Diplomatic relations between our countries were established in 1979. They were severed following the US intervention and occupation of Grenada in 1983, but restored in 2002. Today, Russia’s interests in Grenada are represented on a non-resident basis by the Russian Embassy in Guyana. Grenada remains a reliable partner of the Russian Federation in the Caribbean region. 📆 September 24, 2025 marked an important milestone in Russia-Grenada relations. On the margins of the UN General Assembly, Foreign Minister Sergey Lavrov and his Grenadian counterpart Joseph Andall signed the Agreement on the Basic Principles of Relations between our countries, opening the way to expanded bilateral cooperation in areas of mutual interest. 🎉 We wish a happy national holiday to our Grenadian colleagues and the people of Grenada. We wish them peace, prosperity and continued success. #RussiaGrenada#RussiaLatinAmerica

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