The big problem is that it would require a major rewrite of the sys module, wouldn't it?
Under 2.2 this would be easy because you could just do 'sys.__class__ = MyNewSysClass'. Can you still do that in 2.3 as long as 'MyNewSysClass' is a non-heap type with a compatible layout?
I very much doubt that this worked in any version of Python 2.2 or later.
Python 2.2.2 (#37, Oct 14 2002, 17:02:34) [MSC 32 bit (Intel)] on win32 Type "copyright", "credits" or "license" for more information. IDLE 0.8 -- press F1 for help
from types import ModuleType import sys class NewSys(ModuleType): __slots__ = () def exc_type(self): return self.__dict__['exc_type'] exc_type = property(exc_type)
sys.__class__ = NewSys try: raise TypeError except: print sys.exc_type
exceptions.TypeError
sys.exc_type = 1 Traceback (most recent call last): File "<pyshell#33>", line 1, in ? sys.exc_type = 1 AttributeError: can't set attribute sys.__class__ = ModuleType sys.exc_type = 1
OK, so it worked. It doesn't work in 2.3. But something else might work. --Guido van Rossum (home page: http://www.python.org/~guido/)