Dan Snider added the comment:
Just wanted to add that I found this when I was trying to find a way to
decorate all methods in a class without using a metaclass or modifying
__getattr__.
Using Josh's workaround, here's a simple demonstration that (at least at first
glance) prints a message when a method is called and when it is finished:
def mydec(*, enter=True, exit=True):
def make_closure(__class__):
return (lambda: super).__closure__
def outer(cls):
def wrapper(method):
@functools.wraps(method)
def inner(*args, **kwargs):
if enter:
print('entering', method.__qualname__)
r = method(*args, **kwargs)
if exit:
print('exiting', method.__qualname__)
return method(*args, **kwargs)
return inner
for name, value in cls.__dict__.items():
if isinstance(value, types.FunctionType):
method = types.FunctionType(getattr(cls, name).__code__,
globals(),
closure=make_closure(cls))
setattr(cls, name, wrapper(method))
return cls
return outer
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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue29944>
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