Python задачи и вопросы | United States America (US)

Create: 2025-04-27 Update: 2025-07-01 07:56:33

Есть ли в Python сборщик мусора, и, если есть, как он работает?

Стандартный интерпретатор использует несколько алгоритмов.

🧹 Подсчёт ссылок. Каждый объект в Python содержит внутренний счётчик ссылок. Когда он падает до нуля, это означает, что на объект больше нет ссылок, его можно удалить. Главный недостаток этого алгоритма — не умеет определять циклические ссылки.
🧹 Алгоритм поиска циклов. Реализован в модуле gc и активируется время от времени, а не постоянно. Если коротко, этот алгоритм периодически ищет объекты, которые ссылаются только друг на друга и не доступны извне. Объекты, признанные недостижимыми, удаляются.
Также стоит добавить, что циклический сборщик мусора делит объекты на три поколения в зависимости от того, как долго они существуют в памяти. Новые объекты помещаются в первое поколение. Если они сохраняются после очередного процесса сбора мусора, то перемещаются в следующее по старшинству поколение. Объекты в более старших поколениях проверяются реже.

Python задачи и вопросы

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Есть ли в Python сборщик мусора

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