Вторая по частоте future-функция, которую я использовал, это абсолютный импорт
from __future__ import absolute_import
Что она делает?
Изменения, которые вносит эта инъекция описаны в PEP328
Покажу простой пример.
Допустим, есть такой пакет:
/my_package
/__init__.py
/main.py
/string.py
Смотрим код в my_package/main.py
# main.py
import string
Простой пример готов) Вопрос в том, какой модуль импортируется в данном случае? Есть два варианта:
1. модуль в моём пакете my_package.string
2. стандартный модуль string
И вот тут вступает в дело приоритет импортов. В Python2 порядок следующий: помимо иных источников, раньше ищется модуль внутри текущего пакета, а потом в стандартных библиотеках. Таким образом мы импортнём my_package.string.
Но в Python3 это поведение изменилось. Если мы указываем просто имя пакета, то ищется именно такой модуль, игнорируя имена в текущем пакете. Если мы хотим импортнуть именно подмодуль из нашего пакета то, мы должны теперь явно это указывать.
from my_package import string
или относительный импорт, но с указанием пути относительно текущего модуля main
from . import string
Еще одной неоднозначностью меньше 😎
Подробней про импорты здесь:
https://docs.python.org/3/tutorial/modules.html
#2to3#pep#basic
🪐 The Tarantula Nebula in the Large Magellanic Cloud is the most active star-forming region in the Local Group of galaxies, producing some of the most massive stars ever observed. Inside this cosmic web, the star R136a1 blazes with a mass over 250 times that of the Sun, pushing the boundaries of how big stars can grow before they collapse. ✨
#TarantulaNebula⚡#starformation⚡#R136a1
👉subscribe Universe Mysteries
🪐 The pulsar PSR J0537−6910, spinning an incredible 62 times per second, sits in the Tarantula Nebula of the Large Magellanic Cloud and holds the record for the fastest known "glitches." Glitches are sudden jumps in a pulsar’s rotation speed—caused by internal adjustments in these ultra-dense, spinning neutron stars—and PSR J0537−6910’s frequent glitches help scientists unlock secrets about the strange matter inside these cosmic lighthouses. ✨
#pulsars⚡#neutronstars⚡#tarantulanebula⚡#nasa⚡#galaxy⚡#stars⚡#astronomy⚡#universe⚡#cosmos⚡#space
👉subscribe Universe Mysteries
👉more Channels
🪐 The rapidly spinning star VFTS 102, found in the Tarantula Nebula of the Large Magellanic Cloud, is one of the fastest rotating stars ever observed—spinning at over 2 million kilometers per hour. This extreme speed stretches the star into an oblate shape and may be the result of a dramatic past, possibly caused by a close encounter or collision with another star. ✨
#unusualstars⚡#tarantulanebula⚡#rotation⚡#nasa⚡#galaxy⚡#stars⚡#astronomy⚡#universe⚡#cosmos⚡#space
👉subscribe Universe Mysteries
👉more Channels
🪐 The star VFTS 352, located in the Tarantula Nebula about 160,000 light-years away, is actually two massive stars orbiting each other so closely that their outer layers touch—creating a rare "overcontact binary." This unusual system is on the verge of merging, and both stars are so hot and bright that their shared atmosphere fuses them together, making VFTS 352 one of the most extreme examples of stellar partnership ever found. ✨
#unusualstars⚡#binaries⚡#TarantulaNebula⚡#nasa⚡#galaxy⚡#stars⚡#astronomy⚡#universe⚡#cosmos⚡#space
👉subscribe Universe Mysteries
👉more Channels
🪐 In the Tarantula Nebula of the Large Magellanic Cloud, light from young, massive stars races outward at the universal speed limit—299,792 kilometers per second—helping illuminate vast clouds of gas across 1,000 light-years of space. Because nothing can travel faster than this speed in a vacuum, the glow we see from such stellar nurseries is always an echo from the past, showing us cosmic events exactly as they unfolded years, decades, or even millennia ago. ✨
#speedoflight⚡#tarantulanebula⚡#largemagellaniccloud⚡#nasa⚡#galaxy⚡#stars⚡#astronomy⚡#universe⚡#cosmos⚡#space
👉subscribe Universe Mysteries
🪐 The star R136a1, found in the Tarantula Nebula of the Large Magellanic Cloud, is considered the most massive known star, weighing in at about 215 times the mass of our Sun. Unlike ordinary stars, R136a1 is so hot and bright that it blasts vast amounts of its own material into space, shortening its lifespan to just a few million years—an incredibly brief existence for such a cosmic giant. ✨
#unusualstars⚡#tarantulanebula⚡#stellarphysics⚡#nasa⚡#galaxy⚡#stars⚡#astronomy⚡#universe⚡#cosmos⚡#space
👉subscribe Universe Mysteries
👉more Channels