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: #factfriday
@ncdcgov · Post #4590 · 30.01.2026 г., 11:39
#FactFriday Feeling thirsty is a late indicator of dehydration. To support optimal body function, it is important to drink water consistently throughout the day, even before thirst occurs. Staying adequately hydrated is essential for overall health.✅ #FactFriday#NCDCNigeria
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@ncdcgov · Post #4461 · 04.04.2025 г., 10:16
🧼#FactFriday Did you know? With proper hygiene, communicable diseases are preventable! Washing your hands, keeping your environment clean, and practicing good personal hygiene can help stop the spread of infections. Stay informed. Stay safe. #TakeResponsibility
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@ncdcgov · Post #4610 · 27.02.2026 г., 09:44
What you eat matters more than you think. ✅Good nutrition fuels your body, strengthens your immune system, and helps you resist infections like flu, cholera, and other communicable diseases. Healthy choices today, stronger immunity tomorrow.💪 #FactFriday#HealthyLiving#NCDCNigeria
@ncdcgov · Post #4543 · 26.09.2025 г., 11:23
#FactFriday Contaminated water can spread illnesses which affects millions of people every year. Clean water and proper hygiene practices can greatly reduce health risks and improve wellbeing. Protect yourself and your loved ones by: ✔️ Drinking only safe and clean water ✔️ Practicing good hand hygiene: Wash hands with soap under clean running water ✔️ Keeping your environment clean and free from waste ✔️ Following public health guidelines on sanitation ✨Your small daily actions can prevent big health problems. Drink Clean, Stay Safe, Stay Healthy! #FactFriday#HealthyLiving#NCDCNigeria
@ncdcgov · Post #4516 · 29.08.2025 г., 13:57
#FactFriday: _Powering your mind, even at rest! ✨_ 🧠 Did you know your brain uses about 20% of your body’s energy even when you’re resting? This energy keeps your brain cells active, helps process information, regulates your body systems, and keeps you alert. 💡 Take care of your brain with: 🍎 Proper nutrition 😴 Enough sleep 🧘 Regular self-care Stay healthy, stay sharp! #FactFriday#HealthyLiving#NCDCNigeria
@ncdcgov · Post #4510 · 22.08.2025 г., 11:57
#FactFriday Drinking enough water daily helps you stay active, refreshed, and ready to take on the day. 💧 Small habits make a big difference! 💪 #FactFriday#HealthyLiving#NCDCNigeria
@ncdcgov · Post #4558 · 17.10.2025 г., 09:51
#FactFriday Clean hands is one of the simplest and most effective ways to stay healthy and protect those around you from diseases👌 Washing your hands with soap under clean running water for just 20 seconds can reduce your risk of infection by up to 50%? 🙌🏽 Make handwashing a daily habit ✅️ #FactFriday#HandHygiene#HealthyLiving#NCDCNigeria
@ncdcgov · Post #4500 · 15.08.2025 г., 12:14
#FactFriday Every year, mosquitoes are responsible for over 700,000 deaths by spreading diseases like malaria, dengue, and yellow fever. 💡 Protect yourself: ✅ Sleep under insecticide-treated nets ✅ Eliminate stagnant water around your home ✅ Use mosquito repellents Small insect, Big threat. Take action today!📌 #FactFriday#MosquitoFacts#NCDCNigeria
@ncdcgov · Post #4628 · 27.03.2026 г., 12:37
#FactFriday Feeling better doesn’t mean the infection is gone. Stopping antibiotics without proper guidance can fuel Antimicrobial Resistance (AMR) making infections harder to treat. ✔️Always follow your healthcare provider’s advice. ✔️ Only use antibiotics when prescribed ✔️ Always complete your dose ✔️ Take antibiotics exactly as prescribed ✔️ Don’t stop, skip, or share medications. ✅Your actions today protect your health tomorrow.! #FactFriday#StopAMR#PublicHealth#NCDCNigeria
@ncdcgov · Post #4531 · 12.09.2025 г., 10:04
#FactFriday: Good Food, Good You! 🥬🥦Adding more fruits and vegetables to your meals can be a game changer for your health. They are filled with Vitamins, Minerals and fiber that helps boost your immunity, Protect your heart and lower the risk of chronic diseases. Healthy eating starts with fruits and Vegetables✅️ #FactFriday#HealthyLiving#HealthyHabits#NCDCNigeria.
@ncdcgov · Post #4640 · 17.04.2026 г., 13:34
#FactFriday 💡 Did you know? Not all bacteria are harmful. In fact, many are beneficial — helping your body digest food, absorb nutrients, and maintain a healthy immune system. Understanding the role of good bacteria is key to making informed decisions about hygiene, antibiotics, and overall health. #FactFriday#NCDCNigeria#TakeResponsibility#PublicHealthFacts
@ncdcgov · Post #4549 · 03.10.2025 г., 13:16
#FactFriday 💡With proper hygiene, safe practices, and protective measures, dangerous communicable diseases like Ebola can be prevented or controlled? 👐 Staying informed and taking responsibility keeps you and your community safe. ✔️ Practice good hygiene ✔️ Follow health guidelines ✔️ Stay alert and protect others #TakeResponsibility#StaySafe#NCDCGov