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: #lassafever
@ncdcgov · Post #4426 · 18.01.2025 г., 12:51
Our #LassaFever situation report for week 1, 2025 has been published. 54 cases have been confirmed and 10 deaths have been recorded across 6 states in Nigeria. 🔗Download, read, and share via https://ncdc.gov.ng/ncdc.gov.ng/themes/common/files/sitreps/1bded1685f8dc4961a169a274be138c2.pdf
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@ncdcgov · Post #4419 · 31.10.2024 г., 11:00
Our #LassaFever situation reports for weeks 42, 2024 have been published. The weekly report provides a summary of the #LassaFever epidemiological situation and response activities in Nigeria. 🔗Download, read, and share via https://ncdc.gov.ng/diseases/sitreps/?cat=5&name=An%20update%20of%20Lassa%20fever%20outbreak%20in%20Nigeria
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@ncdcgov · Post #4409 · 15.10.2024 г., 08:23
Our #LassaFever situation report for week 40, 2024 has been published. 1025 cases have been confirmed and 174 deaths have been recorded across 28 states in Nigeria. 🔗Download, read, and share via https://ncdc.gov.ng/diseases/sitreps/?cat=5&name=An%20update%20of%20Lassa%20fever%20outbreak%20in%20Nigeria
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@ncdcgov · Post #4375 · 06.09.2024 г., 09:11
Our latest #LassaFever situation report shows that 982 confirmed cases and 168 deaths have been recorded in 2024. This loss of lives is not just a number but a significant loss of a family member, friend, colleague or a seasoned healthcare worker CEPI vaccines writes on the critical need for a #LassaFever vaccine to control this disease. 🔗 https://cepi.net/lassa-vaccine-urgently-needed-save-thousands-lives Situation report: https://ncdc.gov.ng/diseases/sitreps/?cat=5&name=An%20update%20of%20Lassa%20fever%20outbreak%20in%20Nigeria
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@ncdcgov · Post #4371 · 04.09.2024 г., 08:49
We have published our latest #LassaFever epidemiology data. Here you can find a summary of all the latest figures in our weekly infographic.🔽 The full report can be accessed via 🔗https://ncdc.gov.ng/diseases/sitreps/?cat=5&name=An%20update%20of%20Lassa%20fever%20outbreak%20in%20Nigeria
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@ncdcgov · Post #4362 · 23.08.2024 г., 10:27
Our #LassaFever situation report for week 32, 2024 has been published. The weekly report provides a summary of the #LassaFever epidemiological situation and response activities in Nigeria. 🔗Download, read, and share via https://ncdc.gov.ng/diseases/sitreps/?cat=5&name=An%20update%20of%20Lassa%20fever%20outbreak%20in%20Nigeria
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@ncdcgov · Post #4346 · 08.08.2024 г., 09:19
Our #LassaFever situation report for week 30, 2024 has been published. The weekly report provides a summary of the #LassaFever epidemiological situation and response activities in Nigeria. 🔗Download, read, and share via https://ncdc.gov.ng/diseases/sitreps/?cat=5&name=An%20update%20of%20Lassa%20fever%20outbreak%20in%20Nigeria
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@ncdcgov · Post #4342 · 02.08.2024 г., 10:06
Our #LassaFever situation reports for weeks 28 and 29, 2024 have been published. The weekly report provides a summary of the #LassaFever epidemiological situation and response activities in Nigeria. 🔗Download, read, and share via https://ncdc.gov.ng/diseases/sitreps/?cat=5&name=An%20update%20of%20Lassa%20fever%20outbreak%20in%20Nigeria
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@ncdcgov · Post #4323 · 03.07.2024 г., 12:19
Our #LassaFever situation report for week 25, 2024 has been published. The weekly report provides a summary of the #LassaFever epidemiological situation and response activities in Nigeria. 🔗Download, read, and share via https://ncdc.gov.ng/diseases/sitreps/?cat=5&name=An%20update%20of%20Lassa%20fever%20outbreak%20in%20Nigeria
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@ncdcgov · Post #4316 · 25.06.2024 г., 09:27
Our #LassaFever situation report for week 24, 2024 has been published. The weekly report provides a summary of the #LassaFever epidemiological situation and response activities in Nigeria. 🔗Download, read, and share via https://ncdc.gov.ng/diseases/sitreps/?cat=5&name=An%20update%20of%20Lassa%20fever%20outbreak%20in%20Nigeria
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@ncdcgov · Post #4314 · 21.06.2024 г., 13:37
Our #LassaFever situation report for week 23, 2024 has been published. The weekly report provides a summary of the #LassaFever epidemiological situation and response activities in Nigeria. 🔗Download, read, and share via https://ncdc.gov.ng/diseases/sitreps/?cat=5&name=An%20update%20of%20Lassa%20fever%20outbreak%20in%20Nigeria
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@ncdcgov · Post #4294 · 04.06.2024 г., 13:55
Our #LassaFever situation report for week 21, 2024 has been published. The weekly report provides a summary of the #LassaFever epidemiological situation and response activities in Nigeria. 🔗Download, read, and share via https://ncdc.gov.ng/diseases/sitreps/?cat=5&name=An%20update%20of%20Lassa%20fever%20outbreak%20in%20Nigeria
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