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: #antimicrobials
@ncdcgov · Post #4339 · 31.07.2024 г., 09:29
#Antimicrobials are not always needed when you are feeling unwell. Antibiotics should only be prescribed by healthcare professionals after an appropriate diagnostic test. Be an #AntimicrobialResistance guardian.
@ncdcgov · Post #4273 · 10.05.2024 г., 10:58
#Antimicrobials are not always needed when you are feeling unwell. Antibiotics should only be prescribed by healthcare professionals after an appropriate diagnostic test. Be an #AntimicrobialResistance guardian
@ncdcgov · Post #4071 · 14.11.2023 г., 08:25
#Antimicrobials are not always needed when you are feeling unwell. Antibiotics should only be prescribed by healthcare professionals after an appropriate diagnostic test. Be an #AntimicrobialResistance guardian
@ncdcgov · Post #3884 · 05.07.2023 г., 14:30
#Antimicrobials are not always needed when you are feeling unwell. Antibiotics should only be prescribed by healthcare professionals after an appropriate diagnostic test. Be an #AntimicrobialResistance guardian
@ncdcgov · Post #4293 · 03.06.2024 г., 08:37
#Antimicrobials are vital in fighting infectious diseases across humans, animals, and plants. However, their effectiveness is diminishing, leading to a growing and urgent crisis known as #AntimicrobialResistance. Let’s promote the responsible use and work together to combat #AMR.
@ncdcgov · Post #3814 · 20.04.2023 г., 10:47
#Handwashing is a basic and effective tool against infections. If we do not become sick, we would not need to use #antimicrobials. Encourage your loved ones to practice frequent #handwashing with soap under running water. Do your part to prevent #AntimicrobialResistance
@ncdcgov · Post #4096 · 23.11.2023 г., 11:44
#Antimicrobials are becoming less effective against common infections in animals & humans. 🚫 Do not self-medicate ✅ Visit a healthcare professional when sick Everyone has a role to play to ensure #antimicrobials continue to work. #AMR#WAAW2023
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@ncdcgov · Post #3731 · 14.02.2023 г., 12:28
#AntimicrobialResistance is a global concern affecting everyone, everywhere, including users & non-users of #antimicrobials Our National Action Plan for Antimicrobial Resistance incorporates a #OneHealth approach to contain #AMR in Nigeria Read & share: https://ncdc.gov.ng/themes/common/docs/protocols/77_1511368219.pdf
@ncdcgov · Post #3808 · 17.04.2023 г., 08:55
#AntimicrobialResistance is one of the top 10 health threats in the world. Everyone everywhere, including users and non-users of #antimicrobials have a role to play to prevent #AMR. #BeAntimicrobialAware
@ncdcgov · Post #4086 · 20.11.2023 г., 12:18
Every year, the National Antimicrobial Resistance Technical Working Group joins the global community to raise awareness of the dangers of misuse or overuse of #antimicrobials. Fighting #AMR is a global endeavour that must be addressed through a #OneHealth approach as evident in this year's theme of #WAAW2023: ‘Preventing #AntimicrobialResistance together” 🔗Press Release https://ncdc.gov.ng/news/504/nigeria-joins-the-global-community-to-commemorate-world-antimicrobial-awareness-week-%28waaw%29
@ncdcgov · Post #3607 · 18.11.2022 г., 12:04
Misuse or overuse of #antibiotics💊 & other #antimicrobials can reduce its effectiveness in treating common infections in animals & humans. From 18th-24th November, we are joining the global health community to mark the annual #WorldAntimicrobialAwarenessWeek2022 . #StayTuned
@ncdcgov · Post #4169 · 22.01.2024 г., 17:45
#AntimicrobialResistance is when medicines like #antimalarials, tetracycline, septrin, and amoxicillin no longer treat diseases they cured previously. Everyone everywhere, including users and non-users of #antimicrobials has a role to play to prevent #AMR. #BeAntimicrobialsAware