Overriding "__setattr__" of a module - possible?

[John Nagle]

On 6/15/2010 8:34 PM, Michele Simionato wrote:
> On Jun 16, 4:43 am, John Nagle<na... at animats.com>  wrote:
>>     Is it possible to override "__setattr__" of a module?  I
>> want to capture changes to global variables for debug purposes.
>>
>>     None of the following seem to have any effect.
>>
>>          modu.__setattr__ = myfn
>>
>>          setattr(modu, "__setattr__", myfn)
>>
>>          delattr(modu, "__setattr__")
>>
>>                                  John Nagle
>
> There is a dirty trick which involves fiddling with sys.modules.
> For instance:
>
> $ cat x.py
> import sys
>
> class FakeModule(object):

    Cute, but it doesn't work in general.  Faking a module as a
class fails when you simply call

	x()

within the module.

    I also tried

	modu.__dict__['__setattr__'] = myfun
	...
	modu.foo = 1	# "myfun" does not get called.

Any more ideas?


					John Nagle