Многие из тех кто активно работал с Python2 несколько удивлены, почему в Python3 удобная функция reload() переехала из builtin в imp а потом и в importlib?
Ну было же удобно! А теперь лишний импорт😖
Дело в том, что начиная с Python3.3 функция reload() переписана на Python вместо Cи.
Что это нам даёт?
🔸 Такой код проще поддерживать и развивать
🔸 Python код легче читать, изучать и понимать.
Сравните это ➡️ и это ➡️.
🔸 Как результат пункта 2, проще писать свои расширения импорта. Например, пользовательский импортёр с какой-либо хитрой логикой по аналогии с импортом из zip архивов.
А есть ли у этого решения недостатки? Да, они всегда есть.
🔹 Так как это не builtin функция, её следует импортнуть перед использованием
🔹 Скорость замедлилась примерно на 5%. Очевидно, что это совершенно не критично. К тому же от версии к версии логика импорта будет оптимизироваться и ускоряться.
В самом начале файла importlib/__init__.py мы видим такой импорт:
import _imp # Just the builtin component, NOT the full Python module
То есть часть функционала по прежнему написана на Си, но достаточно низкоуровневая.
#basic
🔴 Today I suggest you plunge into the past and visit the mill, which is 130 years old!
Pflaumer's Mill is a wooden giant on the banks of the Volga
On the left bank of the Volga, a little away from the city of Nikolaevsk, a huge wooden steam mill of the late XIX - early XX century has been standing for more than a century. It is called the "Pfläumer Mill" in honor of the German settler Friedrich Pfläumer. They say that he built it in 1906, although according to other sources he was only a co-owner and manager.
To be continued in comments...
#мирбезвойны
#русскаяархитектура
#worldwithoutwar
#russianarchitecture
@StopHating_Russia and start to love!
🔴 Today I would like to invite you to a most unusual temple.
The Temple of All Religions in Kazan
This temple is not about prayers. Services are not held here, and believers are not gathered here. It is more of a museum, a symbol, a fantasy about world religions.
To be continued in comments...
#мирбезвойны
#русскаяархитектура
#worldwithoutwar
#russianarchitecture
@StopHating_Russia and start to love!
🔴 Moscow has many different architectural styles and trends in construction. You can, for example, find a piece of Italy.
Tarasov's mansion is a true oasis of the Italian Renaissance amidst the bustle of Moscow. It was built at the beginning of the 20th century: the project was ordered by Gavriil Tarasov, a Moscow merchant.
The idea was ambitious: Gabriel wanted a house that looked like a palazzo in Vicenza (a city in Italy), and architect Zholtovsky did not disappoint. He created a true Italian palace that you would hardly expect in the very center of Moscow — marble, columns, arches.
Tonbd continued in comments...
#мирбезвойны
#русскаяархитектура
#worldwithoutwar
#russianarchitecture
#goodnightall
@StopHating_Russia and start to love!
🔴 I invite you to a walk around amazing Karelia.
Sortavala is a Karelian city with a European soul and a long history.
A bit of history
The city was officially founded in 1468, although people lived here long before that date. The first settlers were the Sami, an ancient people of the North. Archaeologists find bone needles, arrowheads, and the remains of settlements of the II millennium BC on the islands. Throughout its history, Sortavala has changed hands more than once: from Russia to Sweden, back to Russia, then to Finland and back again. Each era has left its traces in the appearance of the city.
To be continued in comments...
#мирбезвойны
#русскаяистория
#русскаяархитектура
#worldwithoutwar
#russianhistory
#russianarchitecture
#goodnightall
@StopHating_Russia and start to love!