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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

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NewUU Student Council

@newuu_sc · Post #1460 · 08.02.2025 г., 07:37

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🌍 SDG Week: The SDG Nexus – Connecting People and Purpose 🌱 Get ready for an inspiring journey towards a sustainable future! 🌏✨ Join us at Webster University in Tashkent for SDG Week, where you’ll engage with global experts, take part in interactive workshops, and explore how YOU can make a difference in achieving the Sustainable Development Goals. 📆Date: February 10-12 📍Location: Webster University in Tashkent 🕛Time: 12:00 p.m. What to Expect? 📅Day 1: Opening Conference & Networking 🎤 Kick off SDG Week with a powerful conference featuring 5 international universities, a United Nations representative, and leading experts in the field of SDGs. 🤝 Connect with like-minded individuals passionate about sustainability and change. 📅Day 2: Eco Health & Sport Day 🌱 Learn from eco-activist Urikguli (Mutabar Xushvaqtova) in an engaging workshop on environmental sustainability and its impact on our well-being. ⚽ The session will be followed by exciting sports matches to promote health and sustainability. 📅Day 3: Hands-On Workshops & Action Planning 💡 Dive deeper into real-world solutions through interactive workshops, where you’ll develop actionable strategies to contribute to sustainable development. 🍕Special snacks will be provided between networking sessions!🤫 🚀Want to actively contribute to the event? If you have an idea, project, or expertise related to the SDGs and would like to be a part of the program as a speaker, organizer, or contributor, fill out this form: 📢Contribute to SDG Week:https://forms.gle/ReaaTpPMP5W41KwW8 🔗Register as a participant:https://forms.office.com/r/QVFg4ZFZy8?origin=lprLink 📢Join the SDG Club:https://t.me/sdgclubwebster #SDGWeek#SustainableDevelopment#MakeADifference#PeopleAndPurpose

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INHA University in Tashkent

@inha_uz · Post #8528 · 20.01.2025 г., 12:05

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🌟 Join Us in Supporting the Children’s Hospice! 🌟 🗓Date: 25th of January 📍 Gathering Point: INHA University at 9:00 AM This event is dedicated to bringing love, care, and support to children in the hospice during their most challenging times. Let's come together to make a difference in their lives! ❤️ Your contributions and time as a volunteer can truly bring hope and smiles. 💬How to Help: ✅ Donate: Every little contribution matters 9860 3501 4923 6621(Aleksandra Kim) ✅ Volunteer: Be part of this meaningful event. For more details: @iut_charityy Let’s create a wave of kindness and show these children that they are not alone! 💕 #CharityEvent#ChildrenHospice#Volunteer#IUTCharity#MakeADifference

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Real Eco Committee

@real_eco · Post #4 · 15.04.2026 г., 07:56

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🌱 Join our Eco Committee! Want to make a real difference for the environment? 🌍💚 If you're interested in being part of our project, come to our Thursday school eco volunteering meeting! Let’s work together for a greener future 🌿✨ #EcoCommittee#EcoClub#GoGreen#Sustainability#SaveThePlanet#EcoFriendly#SchoolLife#Volunteer#ClimateAction#GreenFuture#EnvironmentalAwareness#ActNow#StudentsForChange#MakeADifference#EcoWarriors

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#ecocommittee #ecoclub #gogreen #sustainability #savetheplanet #ecofriendly #schoollife #volunteer #climateaction #greenfuture #environmentalawareness #actnow #studentsforchange #makeadifference #ecowarriors