TGTGInsighttelegram intelligenceLIVE / telegram public index
← Python Заметки

TGINSIGHT SIMILAR POSTS

Најди сличен содржај

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

Резултати

Пронајдени 4 слични објави

Пребарај: #accept

当前筛选 #accept清除筛选

😄Accept ➖➖➖➖➖➖ Accept is a regular verb. Here are five common ways to use it: 🔘to agree to take something or receive something willingly, for example a gift, an award, an apology, responsibility for something or even a form of payment. 🔜Many shops don’t accept cash anymore. 🔜The actor accepted a life achievement award at a special ceremony. 🔘 to say yes to an invitation or an offer. 🔜She accepted the job straight away! 🔜I accepted Leon's dinner invitation from us both. I hope that's OK! 🔘to believe or recognise that something is true. 🔜The relationship has been over for weeks, but he still refuses to accept it. 🔜The police officer didn't accept the suspect's answer. 🔘to consider satisfactory or to give approval. 🔜Tommy was immediately accepted by the other children at his new school. 🔜Her boyfriend's family welcomed and accepted her straight away. 🔘to endure something without complaint. 🔜He accepted that he had lost the match. 🔜Even though it makes me sad, I accept that my one minute with you is up. #Accept👨‍🏫@America ➖➖➖➖➖➖➖➖➖➖➖➖ 🆕 Crypto News @Money 😁 Crypto Game @Egame 🇺🇸 US News @America 🇯🇵 Japan News @Japan 🇦🇪 UAE News @Dubai ▶️ Popular Movies @Videos 😜 Best Funny Video @Funnys

Hashtags

😄Accept ➖➖➖➖➖➖ Accept is a regular verb. Here are five common ways to use it: 🔘to agree to take something or receive something willingly, for example a gift, an award, an apology, responsibility for something or even a form of payment. 🔜Many shops don’t accept cash anymore. 🔜The actor accepted a life achievement award at a special ceremony. 🔘 to say yes to an invitation or an offer. 🔜She accepted the job straight away! 🔜I accepted Leon's dinner invitation from us both. I hope that's OK! 🔘to believe or recognise that something is true. 🔜The relationship has been over for weeks, but he still refuses to accept it. 🔜The police officer didn't accept the suspect's answer. 🔘to consider satisfactory or to give approval. 🔜Tommy was immediately accepted by the other children at his new school. 🔜Her boyfriend's family welcomed and accepted her straight away. 🔘to endure something without complaint. 🔜He accepted that he had lost the match. 🔜Even though it makes me sad, I accept that my one minute with you is up. #Accept👨‍🏫@America ➖➖➖➖➖➖➖➖➖➖➖➖ 🆕 Crypto News @Money 😁 Crypto Game @Egame 🇺🇸 US News @America 🇯🇵 Japan News @Japan 🇦🇪 UAE News @Dubai ▶️ Popular Movies @Videos 😜 Best Funny Video @Funnys

Hashtags