This is more a Python question, but maybe somebody knows a solution.
I want to define some kind of hook on a class E which is called whenever
another class inherits from E.
So the moment somebody does
class SomeOtherClass(E):
...
I want a hook function to be called with SomeOtherClass as argument, in
order to monkey-patch SomeOtherClass. Is this possible?
Note: what I *really* want to do is to fix __cmp__() vs. _cmp_(). Sage
has the very annoying convention that Python classes should use __cmp__
but Cython classes should use _cmp_. This means that __richcmp__ needs
to pull some crazy hacks to determine whether the class is a Python or
Cython class.
The obvious solution is to change __cmp__ to _cmp_ for every Python
class inheriting from Element (a lot of effort). The non-efficient
solution is to check for __cmp__ every time _cmp_ needs to be called.
The optimal solution would be to somehow automatically monkey-patch
those classes to define _cmp_ as alias for __cmp__.
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