Cameron already dealt with globals, so I'll try to tackle this one.
Is it possible to iterate through all variables in all scopes in all objects?
Quick answer: no
Long answer: you would need to get access to every object pointer in the
entirety of the interpreter. I'm sure this could probably be done with
a C extension module that returned a list of every object in existance
by hooking into the garbage collector, but you really don't want to do
this, because you'd get references to EVERYTHING, including functions,
methods, C extension functions, etc.
A better idea would be to use weakrefs to keep references to every live
object that you care about, and if you desire, search through those:
class myobject:
__olist = {}
def __init__(self):
#create a weak reference to yourself
#place it in the __olist
self.__olist[id(self)] = ref(self)
def __del__(self):
del self.__olist[id(self)]
def get_olist(self):
#this creates a hard reference to every object
return [o() for o in self.__olist.values() if o() is not None]
- Josiah
