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• Notes

  ...definition in the nearest enclosing function scope will be used. One consequence of this change is that lambda statements could reference variables in the namespaces where the lambda is defined. In some unusual cases, this change will break code. In all previous version of Python, names were resolved in exactly three namespaces -- the local namespace, the global namespace, and the builtin namespace. According to this old definition, if a function A is defined within a function B, the names bo...

• The Python 2.3 Method Resolution Order

  ...definitions. Given a class C in a complicated multiple inheritance hierarchy, it is a non-trivial task to specify the order in which methods are overridden, i.e. to specify the order of the ancestors of C. The list of the ancestors of a class C, including the class itself, ordered from the nearest ancestor to the furthest, is called the class precedence list or the linearization of C. The Method Resolution Order (MRO) is the set of rules that construct the linearization. In the Python literatu...

• Python Humor

  ...definitions of an OO Programming Language? From: Tim Peters <@email.msn.com> Date: Sun, 29 Mar 1998 18:19:54 -0500 [jeff <nospam@myhost.com>] > Is it not true that a programming language must > enforce "data hiding" or encapsulation to be > considered a true Object Oriented programming > language? Absolutely! Guido (van Rossum, Python's creator) probably doesn't even know how to spell those phrases, though. > (It is true incase you thought...

• Notes

  ...definitions were missing on FreeBSD 5.x unless the __BSD_VISIBLE symbol was defined. configure now defines it as needed. C API Unicode objects now support mbcs as a built-in encoding, so the C API can use it without deferring to the encodings package. Windows The Windows implementation of PyThread_start_new_thread() never checked error returns from Windows functions correctly. As a result, it could claim to start a new thread even when the Microsoft _beginthread() function failed (due ...

• Python 2.4.1 - Release Notes

  ...definition with a platform- specific spelling in that platform's pyconfig.h. You can also override pyport.h's default Py_IS_INFINITY definition now. C API SF patch 1044089: New function PyEval_ThreadsInitialized() returns non-zero if PyEval_InitThreads() has been called. The undocumented and unused extern int _PyThread_Started was removed. The C API calls PyInterpreterState_New() and PyThreadState_New() are two of the very few advertised as being safe to call without holding the GIL. Howe...

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