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Изворен канал @pythonotes · Post #214 · 12 фев.

Как правильно проверить атрибуты доступа файла? То есть доступна ли запись в файл или является ли он исполняемым? Для этого в Python есть функция os.access() Проверять так: os.access(path, flag) Функция вернёт bool в зависимости от наличия указанного флага. Всего есть 4 флага проверки: os.F_OK - наличие файла на диске os.R_OK - доступ на чтение os.W_OK - доступ на запись os.X_OK - доступ на исполнение Например, вместо try-except лучше делать так (пример из документации): if os.access("myfile", os.R_OK): with open("myfile") as fp: return fp.read() #basic#libs

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Universe Mysteries 🪐

@cosmomyst · Post #633 · 22.01.2026 г., 22:21

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🪐 In 2023, astronomers observed a rare type of supernova explosion in the galaxy NGC 4995, located about 59 million light-years away. Classified as a Type Iax supernova, this unusual blast is thought to be a "partial" explosion where the white dwarf star survives the event—unlike normal supernovae, which completely destroy their stars—offering new insight into the variety of stellar deaths in the cosmos. ✨ #supernovae⚡#ngc4995⚡#stardeath⚡#nasa⚡#galaxy⚡#stars⚡#astronomy⚡#universe⚡#cosmos⚡#space 👉subscribe Universe Mysteries 👉more Channels

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Universe Mysteries 🪐

@cosmomyst · Post #746 · 19.04.2026 г., 22:21

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🪐 One of the most powerful supernova explosions ever recorded was SN 1006, observed in 1006 AD and visible from Earth for months—even during the daytime. Located about 7,200 light-years away in the constellation Lupus, this supernova was likely caused by a white dwarf star (the dense remnant of a Sun-like star) pulling in material from a companion until it exploded, briefly becoming brighter than Venus and leaving behind a vast, glowing remnant still detected today. ✨ #supernova⚡#Lupus⚡#stardeath⚡#nasa⚡#galaxy⚡#stars⚡#astronomy⚡#universe⚡#cosmos⚡#space 👉subscribe Universe Mysteries 👉more Channels

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