On Wed, 15 Nov 2017 at 16:27 Ethan Furman <et...@stoneleaf.us> wrote:
> So there are currently two ways to customize a module, with PEP 562 > proposing a third. > > The first method involves creating a standard class object, instantiating > it, and replacing the sys.modules entry with it. > > The second way is fairly similar, but instead of replacing the entire > sys.modules entry, its class is updated to be the > class just created -- something like sys.modules['mymod'].__class__ = > MyNewClass . > > My request: Can someone write a better example of the second method? And > include __getattr__ ? > There's actually an example in the stdlib thanks to importlib.util.LazyLoader <https://docs.python.org/3/library/importlib.html#importlib.util.LazyLoader>, although it uses __getattribute__() and not __getattr__(): https://github.com/python/cpython/blob/d505a29a15a6f9315d8c46445b8a0cccfc2048b8/Lib/importlib/util.py#L212 -Brett > My question: Does that __getattr__ method have 'self' as the first > parameter? If not, why not, and if so, shouldn't > PEP 562's __getattr__ also take a 'self'? > > -- > ~Ethan~ > _______________________________________________ > Python-Dev mailing list > Python-Dev@python.org > https://mail.python.org/mailman/listinfo/python-dev > Unsubscribe: > https://mail.python.org/mailman/options/python-dev/brett%40python.org >
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