m...@distorted.org.uk (Mark Wooding) writes: >> So even if the globals() dictionary is custom, its __setitem__ method is >> *not* called. > > Fascinating. Thank you.
In case it's not obvious, that is because CPython assumes the type for many of its internal or semi-internal structures, and calls the appropriate functions, such as dict.__setitem__ (PyDict_SetItem in C) directly. So python doesn't break the encapsulation of dict itself, it just takes the liberty to assume that globals() is a non-subclassed dict, at least as far as __setitem__ is concerned. -- http://mail.python.org/mailman/listinfo/python-list