51. Audit Hooks
sys.addaudithook, the cpython.PyAudit_AddHook C API, and auditable events across the standard library.
Tag
Runtime
12 notes
50. Context Variables
PEP 567 Context and ContextVar objects, context copying on task creation, and asyncio integration.
49. Signals
Signal handler registration, the eval breaker flag, and safe SIGINT delivery to Python code.
48. Subinterpreters
Per-interpreter state isolation, Py_NewInterpreterFromConfig, and the experimental per-interpreter GIL.
47. Threads
Python thread objects, OS thread mapping, the GIL acquisition protocol, and thread-local state management.
46. The GIL
GIL purpose, implementation in Python/ceval_gil.c, forced release intervals, and its effect on multi-core performance.
45. The MRO
C3 linearization algorithm, mro() computation, and how Python resolves method lookup across multiple inheritance.
44. Classes and Metaclasses
type.__new__ and type.__init__, __init_subclass__, __set_name__, and metaclass resolution order.
43. Descriptors
__get__, __set__, __delete__ protocol, data vs. non-data descriptors, and property/classmethod/staticmethod internals.
42. The Import Lock
The per-module import lock, re-entrant import detection, and deadlock scenarios in multithreaded code.
41. Packages
Package __init__.py, namespace packages (PEP 420), relative imports, and __path__ manipulation.
40. Modules and Imports
The import machinery: finders, loaders, sys.modules cache, and the importlib bootstrap sequence.