This may sound too good to be true, but see for yourself. No time machines involved. Just plug in this metaclass and look for __newclass__ in your class body. It's not perfect, but the problematic corner cases are more bark than bite.
Python, 11 lines
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Copy to clipboard1 2 3 4 5 6 7 8 9 10 11 | class InwardMeta(type):
@classmethod
def __prepare__(meta, name, bases, **kwargs):
cls = super().__new__(meta, name, bases, {})
return {"__newclass__": cls}
def __new__(meta, name, bases, namespace):
cls = namespace["__newclass__"]
del namespace["__newclass__"]
for name in namespace:
setattr(cls, name, namespace[name])
return cls
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Example
class X(metaclass=Meta):
print(__newclass__, id(__newclass__))
print(X, id(X))
# this will print the same thing twice
