TGINSIGHT SIMILAR POSTS
Изворен канал @pythonotes · Post #156 · 2 окт.
Те, кто в Python не первый день, хорошо знают, что на число можно умножить не только число, но и другие типы. Главное, чтобы у этих типов была реализация такой операции. # list >>> [1] * 3 [1, 1, 1] # tuple >>> (2, 3) * 3 (2, 3, 2, 3, 2, 3) # string >>> "A" * 3 "AAA" Так работает полиморфизм стандартных типов. Интересно здесь то, что это сработает и в том случае, когда порядок операндов обратный. То есть int умножить на [тип]. # list >>> 3 * [1] [1, 1, 1] # tuple >>> 3 * (2, 3) (2, 3, 2, 3, 2, 3) # string >>> 3 * "A" "AAA" Если хотите реализовать такое поведение в ваших классах то следует помнить два момента: 1. Если множитель справа, то вам нужно реализовать метод __mul__, наш класс это первый операнд, то есть слева. myType * 3 2. Если множитель слева, то вам нужно реализовать метод __rmul__, наш класс это второй операнд, справа. 3* myType Всё тоже самое можно делать и для других математических операторов. И если в этом примере действие и результат будут фактически одинаковыми, то бывают ситуации, когда это не так. Например, при умножении матриц имеет значение порядок операндов. Для других операторов, таких как деление или сдвиг, очень важно кто с какой стороны находится. >>> 2/4, 4/2 (0.5, 2.0) >>> 2<<3, 3<<2 (16, 12) >>> 100%15, 15%100 (10, 15) #tricks#basic
Пребарај: #cpfflashquiz
@CPFBoard · Post #2013 · 15.04.2026 г., 10:19
Do you know how the Workfare Income Supplement (WIS) scheme can support you as an eligible self-employed person (SEP)? 🙋 Put your knowledge to the test with this #CPFFlashQuiz and discover how WIS can support you for your current and future needs!
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@CPFBoard · Post #1988 · 08.04.2026 г., 10:01
It’s important to take care of your health. Time for a check-up with this #CPFFlashQuiz! Find out how much you know about the three national healthcare schemes that support you at every stage of life.
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@CPFBoard · Post #1941 · 19.02.2026 г., 10:00
🧑💻 Planning your home purchase? Before you go full spreadsheet mode, test your knowledge of CPF housing grants with this #CPFFlashQuiz!
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@CPFBoard · Post #1925 · 06.02.2026 г., 10:01
When life brings new chapters, reviewing and updating your CPF nomination ensures that your CPF savings go to the people you care about, just the way you intended 🩷 Take this #CPFFlashQuiz to test your knowledge on CPF nominations 📝
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@CPFBoard · Post #1915 · 28.01.2026 г., 10:00
Large medical bills can put a strain on your finances, but did you know MediSave can help pay for your health insurance? Take our #CPFFlashQuiz to test your knowledge on your understanding of MediSave!
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@CPFBoard · Post #1890 · 04.01.2026 г., 02:00
It’s National Trivia Day!🧠 Did you know that starting 1 Jan 2026, the Matched Retirement Savings Scheme (MRSS) will be expanded to include Singaporeans with disabilities? Take this #CPFFlashQuiz to learn what MRSS is about!🧐
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@CPFBoard · Post #1869 · 18.12.2025 г., 10:00
Getting your home sweet home? 🏡 Homeownership is just the beginning — and managing your housing loans is the next important step. Try our quick #CPFFlashQuiz to test your knowledge and see how prepared you are!👇
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@CPFBoard · Post #1834 · 11.11.2025 г., 10:00
Wondering how your CPF savings can help with housing? 🔑 Try this #CPFFlashQuiz to find out how your Ordinary Account (OA) can support your housing needs 🏡
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@CPFBoard · Post #1804 · 19.10.2025 г., 10:00
Heard👂some things about MediShield Life and MediSave but not sure if they are just myths? We’ve got you. Here’s a #CPFFlashQuiz to clear things up for you.
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@CPFBoard · Post #1787 · 14.10.2025 г., 02:02
Planning for your home sweet home? 🍰 See how ready you are by taking our #CPFFlashQuiz and boost your confidence in making housing decisions👇
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@CPFBoard · Post #1761 · 23.09.2025 г., 10:01
Unexpected medical expenses can add up over time. Starting your healthcare planning early helps you stay prepared for life’s surprises. Take this #CPFFlashQuiz to test your knowledge and see how much you already know! 🧐
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@CPFBoard · Post #1748 · 12.09.2025 г., 09:59
Ready to smash your financial goals like a pickleball champ? 💥Take on our #CPFFlashQuiz and see if you’ve got the winning edge in saving for the long run.
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