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: #getvaccinated
@ncdcgov · Post #3671 · 02.01.2023 г., 09:05
Vaccines are one of the best tools we have to improve health and well-being around the world. #TakeResponsibility, encourage your loved ones and those around you to #GetVaccinated. Visit https://www.vacsitefinder.nphcda.gov.ng/ to locate the nearest vaccination site to you.
@ncdcgov · Post #3648 · 16.12.2022 г., 08:28
📢 Nigerians are advised to continue to #TakeResponsibility. Visit the nearest government health facility to #GetVaccinated if you have not been previously vaccinated. 🔗 Public Health Advisory: https://www.ncdc.gov.ng/news/429/public-health-advisory-following-the-presidential-approval-for-the-relaxation-of-covid-19-safety-measures-%26-travel-advisory @PSCCOVID19 Update: https://covid19.ncdc.gov.ng/media/files/Press_Release_-_Relaxation_of_COVID-19_Rules_Ako_221212_210142.pdf
@ncdcgov · Post #4301 · 10.06.2024 г., 09:24
#Cholera can be prevented. Immunisation with the oral cholera vaccine plays an important role in outbreak prevention and control and the long-term elimination of #cholera. #GetVaccinated
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@ncdcgov · Post #4450 · 13.03.2025 г., 10:33
🚨DIPHTHERIA SITUATION REPORT🚨 As of March 9, 2025 (Epi-Week 10): 📍 23 suspected cases reported in Lagos (20) and Katsina (3) 📍 0 confirmed cases this week 📍 42,642 suspected cases recorded since 2022 across 37 states 📍 25,812 confirmed cases & 1,319 deaths (CFR: 5.1%) 🔹 Most affected states: Kano, Yobe, Katsina, Bauchi, Borno 🔹 62.9% of cases are in children aged 1–14 years 🔹 Only 19.3% of confirmed cases were fully vaccinated 💉 Vaccination is key! Protect yourself and your loved ones. 📞 Report suspected cases via NCDC’s toll-free line: 6232 🔗 Read more: https://ncdc.gov.ng/themes/common/files/sitreps/0a1f4b602a9f655c68b316934e533928.pdf #Diphtheria#GetVaccinated#NCDCNigeria
@ncdcgov · Post #4078 · 17.11.2023 г., 09:14
People most at risk of #diphtheria infection are urged to #GetVaccinated These include: ➡️Children & adults who have not received any dose of the anti-diphtheria vaccine ➡️Healthcare workers & others who have been exposed to suspected/confirmed cases ➡️People who live in areas with poor sanitation #TakeResponsibility to stay safe
@ncdcgov · Post #3775 · 20.03.2023 г., 09:34
Severe disease, admissions and deaths disproportionately affect the unvaccinated and those with risk factors i.e., older people, people with underlying health conditions and the immunocompromised. #GetVaccinated against #COVID19 to stay safe and healthy. #TakeResponsibility
@ncdcgov · Post #3752 · 01.03.2023 г., 14:30
#COVID19 is still a health threat If you are experiencing symptoms associated with #COVID19, visit the nearest testing centre close to you for diagnosis & treatment #GetVaccinated, the vaccine protects you from severe illness, hospitalisation & death #TakeResponsibility
@ncdcgov · Post #3680 · 09.01.2023 г., 08:16
Severe disease, admissions and deaths disproportionately affect the unvaccinated & those with risk factors i.e., older people, people with underlying health conditions and the immunocompromised. #GetVaccinated against #COVID19 to stay safe and healthy. #TakeResponsibility
@ncdcgov · Post #3675 · 04.01.2023 г., 09:58
Getting vaccinated protects you from severe illness, hospitalisation & death from the #COVID19 virus. #TakeResponsibility, encourage your loved ones and those around you to #GetVaccinated. Visit https://www.vacsitefinder.nphcda.gov.ng/ to locate the nearest vaccination site to you.
@ncdcgov · Post #3661 · 26.12.2022 г., 08:35
Good health is the most important gift this Christmas season. #GetVaccinated against #COVID19 to protect yourself and your loved ones. #TakeResponsibility
@ncdcgov · Post #3622 · 25.11.2022 г., 09:29
Elderly persons & those with existing medical conditions are encouraged to take extra precautions to stay safe & healthy. 💉#GetVaccinated to limit your risk of getting infected with #COVID19. Vaccination sites: https://nphcda.vaccination.gov.ng/vaccination-sites #TakeResponsibility
@ncdcgov · Post #3818 · 26.04.2023 г., 09:07
Immunisation with the oral cholera vaccine plays an important role in outbreak prevention and control and the long-term elimination of cholera. #GetVaccinated #WorldImmunisationWeek