Ранее я уже упоминал о другой фишке из ˍˍfutureˍˍ , это оператор деления.
from __future__ import division
Суть проста. Раньше сложность типа данных результата поределялась типом самого сложного операнда.
Например:
int/int => int
int/float => float
В первом случае оба операнда int, значит и результат будет int. Во втором float более сложный тип, поэтому результат будет float.
Если нам требуется получить дробное значение при делении двух int то приходилось форсированно один из операндов конверировать в float.
12/float(5) => float
Но с новой "философией" это не требуется. В Python3 "floor division" заменили на "true division" а старый способ теперь работает через оператор "//".
>>> 3/2
1.5
>>> 3//2
1
То есть теперь деление int на int даёт float если результат не целое число.
В классах теперь доступны методы __floordiv__() и __truediv__() для определения поведения с этими операторами.
Данный переход описан в PEP238.
#pep#2to3#basic
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🪐 In 2022, astronomers used the Hubble Space Telescope to identify a fast radio burst originating from a galaxy called WISEA J071634.59–190039.2, located about 6 billion light-years from Earth. This pinpointed location helps scientists study the environments where these ultra-short, powerful flashes of radio energy are born, revealing new clues about the mysterious origins of fast radio bursts across the cosmos. ✨
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🪐 In the galaxy dubbed "The Whale" (NGC 4631), astronomers have detected a barrage of fast radio bursts—ultra-brief, intense flashes of radio energy—coming not from the center, but from the galaxy’s outer regions. These mysterious signals last just milliseconds but shine as brightly as billions of suns, making NGC 4631's outskirts a surprising hotspot for one of space’s most powerful, fleeting phenomena. ✨
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🪐 In 2020, astronomers traced a fast radio burst called FRB 200428 to our own Milky Way and found it came from a magnetar named SGR 1935+2154. This was the first time a fast radio burst—a super-short flash of radio energy from space—was directly linked to a known type of object, showing that magnetars, which are neutron stars with extremely strong magnetic fields, can produce these intense cosmic signals. ✨
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🪐 In 2023, astronomers using the Australian Square Kilometre Array Pathfinder (ASKAP) discovered a repeating fast radio burst called FRB 20220912A in the spiral galaxy ESO 601-G024, about 1 billion light-years away. Unlike other repeating bursts, FRB 20220912A's signal showed a strong "downward drift" in frequency, meaning each pulse slowly slid to lower radio frequencies over just a few milliseconds, helping scientists trace the physical processes at the burst's origin. ✨
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🪐 Among the strangest discoveries in astronomy are fast radio bursts (FRBs) emerging from the spiral galaxy NGC 253, also known as the Sculptor Galaxy. In 2022, scientists detected a repeating FRB source here—brief flashes of radio energy lasting just milliseconds and releasing more power than the Sun generates in years—making NGC 253 a new hot spot in the ongoing quest to understand these mysterious cosmic signals. ✨
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🪐 In 2023, the Australian Square Kilometre Array Pathfinder detected an unusual pattern in fast radio bursts coming from the spiral galaxy NGC 2082, with several bursts arriving from different regions within the same galaxy. These millisecond flashes of radio energy, each releasing as much power as hundreds of millions of suns, show that multiple mysterious sources can exist in a single galaxy, deepening the puzzle of what causes these intense cosmic signals. ✨
#fastbursts⚡#ngc2082⚡#radioenergy⚡#nasa⚡#galaxy⚡#stars⚡#astronomy⚡#universe⚡#cosmos⚡#space
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