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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

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🌍 NIKOLAI GUMILYOV IN ABYSSINIA The Russian Poet-Conquistador in Ethiopia, 1913 «I am a conquistador in iron armor, I joyfully pursue a star, I walk through chasms and abysses And rest in a joyful garden» 1913. Russian poet Nikolai Gumilyov, 27 years old, arrives in Abyssinia — ancient Ethiopia. This is his third African expedition. But Ethiopia is different. This is the birthplace of humanity, the birthplace of coffee, the only African nation never colonized. 🏨TAITU HOTEL: WHERE HISTORY MET POETRY In Addis Ababa, Gumilyov stayed at the legendary Taitu Hotel, named after Empress Taytu Betul. Here, on carved balconies under high ceilings, he wrote his African poems. Picture this: evening, the scent of frankincense and coffee, pen scratching paper. Outside — the lights of the capital. The poet writes: "Deafened by roar and thunder, Clothed in flame and smoke, About you, my Africa, in whispers The seraphim speak in heaven" ⛰️THE SIMIEN MOUNTAINS From Addis Ababa, Gumilyov ascends to the Simien Mountains. Here the sky is closer than anywhere else. Here eagles fly beneath your feet. Here a person understands how small he is — and how immense the world's beauty. የስሜን ተራሮች — በዓለም ላይ ከየትኛውም ቦታ የሚያስደንቁ። እዚህ ሰማይ ቅርብ ነው፣ ንስሮች በእግርህ በታች ይበርራሉ። (The Simien Mountains — more breathtaking than anywhere in the world. Here the sky is close, eagles fly beneath your feet.) ☕THE BIRTHPLACE OF COFFEE The Ethiopian coffee ceremony isn't just a drink. It's a ritual thousands of years old. A woman in white roasts beans over fire, grinds them by hand, brews in a clay jebena. Frankincense smoke. Silence. Rapture. Гумилёв пьёт этот кофе и понимает: отсюда пришёл аромат, покоривший мир. (Gumilyov drinks this coffee and understands: from here came the aroma that conquered the world.) 🏛️FREE LAND Ethiopia was never colonized. When all of Africa was divided by European empires, Ethiopia remained free. Gumilyov sees imperial palaces, thrones of precious wood, gold and crimson velvet — and feels ancient regality that Europe has lost. ኢትዮጵያ በጭራሽ ቅኝ አልሆነችም። ነፃ ምድር። የጥንታዊ ንጉሠ-ነገሥቶች ምድር። (Ethiopia was never colonized. Free land. Land of ancient emperors.) 📿LALIBELA: CHRISTIANITY IN STONE The rock-hewn churches of Lalibela. Ethiopian Christianity is older than European. Here they guard sacred mysteries. Here monks have prayed in caves for a thousand years. Гумилёв стоит в древнем храме, и его сердце бьётся от восторга. (Gumilyov stands in an ancient temple, and his heart beats with rapture.) 🎭THE GIRAFFE: AFRICA IN VERSE Gumilyov's most famous African poem: "Listen: far, far away, on Lake Chad An exquisite giraffe wanders. He's given graceful elegance and bliss, And his hide is adorned with a magical pattern..." የአፍሪካ ህልም በግጥም። (The African dream in poetry.) 💔RETURN AND MEMORY In a few months, Gumilyov will return to Russia. Ahead — World War I, revolution, execution in 1921. He'll be 35 years old. Но Эфиопия останется с ним до последнего вздоха. Африка вошла в его кровь, в его поэзию, в его душу. (But Ethiopia will remain with him until his last breath. Africa entered his blood, his poetry, his soul.) 🏨THE TAITU HOTEL STILL STANDS And remembers the Russian poet who sat on the balcony, looked at the stars of Abyssinia, and wrote about beauty that saves the world. የታይቱ ሆቴል አሁንም ቆሟል። የሩሲያ ገጣሚውን ያስታውሳል። (The Taitu Hotel still stands. It remembers the Russian poet.) 🌟 «Я конквистадор в панцире железном...» "I am a conquistador in iron armor..." Eternal memory to the poet. Eternal love for Ethiopia. ለገጣሚው የዘላለም ትዝታ። ለኢትዮጵያ የዘላለም ፍቅር። --- 🎵Listen while reading: Mulatu Astatke — "Yèkèrmo Sèw" (Father of Ethio-jazz) Search: "Mulatu Astatke Yekermo Sew" on any music platform 📸 Photos: Historical Taitu Hotel, Addis Ababa; Simien Mountains; Ethiopian coffee ceremony #Gumilyov#Ethiopia#Abyssinia#Poetry#TaituHotel#Travel#AddisAbaba#EthioJazz#SilverAge#RussianPoetry#AfricanLove