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: #cholera
@ncdcgov · Post #4417 · 26.10.2024 г., 16:13
📣COMING UP Join our Head of Health Emergency Preparedness, Dr Biodun Ogunniyi as he gives update on #Cholera response in Nigeria. Tune in LIVE on NTA to join the conversation 📡DSTV: CH 251 📡GOTV: CH 114 🕥 9:00 pm
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@ncdcgov · Post #4397 · 03.10.2024 г., 12:14
As of 29th September, over 10,000 suspected cases of #cholera have been recorded from the 36 States + FCT. The ongoing cholera outbreak has been worsened by limited access to clean water, open defecation, & poor hygiene practices in affected communities. 🔗Download the situation report https://ncdc.gov.ng/diseases/sitreps/?cat=7&name=An%20update%20of%20Cholera%20outbreak%20in%20Nigeria
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@ncdcgov · Post #4358 · 20.08.2024 г., 08:19
In reporting week 32, the number of suspected cases of #cholera increased to 121 cases. Our weekly situation report provides an update on the current #cholera epidemiological situation in Nigeria and our response activities. 🔗 Download via: https://ncdc.gov.ng/diseases/sitreps/?cat=7&name=An%20update%20of%20Cholera%20outbreak%20in%20Nigeria
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@ncdcgov · Post #4340 · 31.07.2024 г., 12:31
Our weekly #cholera situation report for weeks 28 and 29 has been uploaded. The reports provide an update on the current #cholera epidemiological situation in Nigeria and our response activities. 🔗 Download via: https://ncdc.gov.ng/diseases/sitreps/?cat=7&name=An%20update%20of%20Cholera%20outbreak%20in%20Nigeria
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@ncdcgov · Post #4335 · 18.07.2024 г., 11:16
Your actions, no matter how small can limit the risk of #cholera infection. 🚫Do not defecate in open areas 🧤Clear your drainages ✅Only drink water from safe sources ✅Dispose of refuse properly in waste disposal sites Public health advisory⬇️ 🔗https://ncdc.gov.ng/news/513/stop-cholera%3A-public-health-advisory
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@ncdcgov · Post #4331 · 15.07.2024 г., 12:27
Our weekly #cholera situation report for week 27 has been uploaded. The report provides an update on the current #cholera epidemiological situation in Nigeria and our response activities. 🔗 Download via: https://ncdc.gov.ng/diseases/sitreps/?cat=7&name=An%20update%20of%20Cholera%20outbreak%20in%20Nigeria
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@ncdcgov · Post #4324 · 08.07.2024 г., 08:02
Our #cholera situation reports are now weekly. The reports provide an update on the #cholera epidemiological situation in Nigeria and our response activities. 🔗 Download via: https://ncdc.gov.ng/diseases/sitreps/?cat=7&name=An%20update%20of%20Cholera%20outbreak%20in%20Nigeria
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@ncdcgov · Post #4317 · 26.06.2024 г., 08:36
The bacteria, Vibrio cholerae, that causes #cholera is commonly found in contaminated water and food. Protect yourself. Read our public health advisory on measures to take to prevent yourself from getting infected. ⬇️ 🔗 https://ncdc.gov.ng/news/513/stop-cholera%3A-public-health-advisory
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@ncdcgov · Post #4306 · 15.06.2024 г., 15:23
📣ICYMI The Incident Manager of our National #Cholera Technical Working Group, Mr Sebastian Yennan, was live on Arise TV to discuss the ongoing #cholera outbreak. 🔗 Catch up and share via https://youtu.be/rVHP5kRU4bw?si=aIMQiFD9Uo3qjCND
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@ncdcgov · Post #4304 · 13.06.2024 г., 11:21
#Cholera Situation Report Our monthly Cholera Situation Report for May 2024 has been published on our website. 🔗You can download, read and share via https://ncdc.gov.ng/diseases/sitreps/?cat=7&name=An%20update%20of%20Cholera%20outbreak%20in%20Nigeria
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@ncdcgov · Post #4302 · 11.06.2024 г., 09:06
Severe cases of #cholera can cause death within hours due to dehydration. Recognise the signs and symptoms to ensure you seek early healthcare and treatment if suspected.
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@ncdcgov · Post #4286 · 23.05.2024 г., 10:24
Unwashed hands, untreated water, and uncovered food are some of the ways #Cholera germs are spread. Personal and environmental hygiene remains one of the best ways to STOP #Cholera. Watch this little boy's story on cholera: https://www.youtube.com/watch?v=jG1VNSCsP5Q
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