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Изворен канал @pythonotes · Post #32 · 7 фев.

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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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#define#tricks
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AI & Law

@ai_and_law · Post #296 · 29.04.2024 г., 07:04

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US: SEC Puts Individuals on Notice: Be Mindful of AI Disclosure Risks The Securities and Exchange Commission (SEC) is casting a wider net in its efforts to ensure transparency around Artificial Intelligence in the financial sector. While companies have been warned about potential misleading AI disclosures, the SEC is now emphasizing the potential liability of individual actors. The SEC continues its fight against "AI-washing," where companies inflate or misrepresent their use of AI technology. Director Grewal highlighted recent settlements with investment advisors who made false claims about their AI capabilities, similar to past actions taken in the Environmental, Social, and Governance (ESG) space. This is a significant shift. Previously, the SEC's focus was on corporate disclosure failures. Now, individuals involved in AI-related disclosures could face penalties if they: ✅ Knowingly or unknowingly misrepresent the role and risks of AI in their company's operations. ✅ Fail to take reasonable steps to ensure accurate disclosures. If you're involved in AI development or implementation for publicly traded companies: - be aware of your potential liability regarding accurate disclosures; - encourage a culture of transparency within your organization regarding AI use; - seek guidance from legal and compliance professionals to navigate the evolving regulatory landscape. #AI#SEC#Disclosure#FinancialMarkets

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#ai#sec#disclosure#financialmarkets
🐎 Mustang Debbie Channel🐎

@mustangdebb · Post #47677 · 09.05.2026 г., 02:35

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https://x.com/mrmbb333/status/2052868548574560425?s=52 🛸 THE UFO DISCLOSURE ISN’T THE BIGGEST STORY Something changed. Not just in Washington… but in the skies. For years people were mocked for talking about strange objects, unexplained lights, military encounters, electrical disturbances, and things that didn’t make sense. Now suddenly… files are being released. Pilots are speaking openly. Major media outlets are covering it nonstop. But here’s what stands out Why is all of this happening at the SAME time the world is seeing: • increased solar activity • strange sky phenomena • drone/satellite concerns • auroras farther south • extreme weather worldwide • nonstop reports coming from the skies Maybe this was never just about UFOs. Maybe something bigger is changing around us… and people are finally starting to notice. 👇 What do YOU think is really going on right now? #MrMBB333#UFO#Disclosure#SpaceWeather#UAP

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#mrmbb333#ufo#disclosure#spaceweather#uap
BadVolf

@badvolfnews · Post #940 · 26.09.2023 г., 21:55

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⚠️#ALARM⚠️#BreakingNews⚡️#France🇫🇷 #francophonie#Switzerland#Africa #France#Population in great #Danger⚡️ #Pfizer#CovidPsyOps#Documents#Revealtions#Disclosure#Website#Truth#Veritee#Action#Genocide#Eris #NATO is #using France 🇫🇷 as a #testingground. #Hackers have probably hacked the server of NATO's Scientific Collaboration support office in #Paris and published #Secret⚠️#NATO documents. These documents reveal extremely shocking facts, namely: the low efficacy of the Pfizer vaccine against the new strain of #Omicron, the high risk of embryonic developmental pathologies and cardiovascular diseases following injection of the vaccine, and NATO's implementation of dangerous experiments in the heart of Paris and the surrounding area. https://x.com/Najadi4Justice/status/1706713373344223516?s=20

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#alarm#breakingnews#france#francophonie#switzerland#africa#population#danger#pfizer#covidpsyops#documents#revealtions#disclosure#website#truth#veritee#action#genocide#eris#nato#using#testingground#hackers#paris#secret#omicron