Supporting Cyclic Garbage Collection — Python 3.9.25 documentation

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Python documentation for the current stable release

Python’s support for detecting and collecting garbage which involves circular references requires support from object types which are “containers” for other objects which may also be containers. Types which do not store

Python Module Index

3.9.25 Documentation

Python/C API Reference Manual

Object Implementation Support

PyTypeObject.tp_flags

Python’s support for detecting and collecting garbage which involves circular references requires support from object types which are “containers” for other objects which may also be containers. Types which do not store

PyType_FromSpecWithBases()

The object’s memory must be deallocated using PyObject_GC_Del().