Is types.InstanceType no longer valid with Python 2.2

[Georg Lohrer]

Hi,

after updating to Python 2.2 I've gotten some errors yielded by my
lines:

class foo:
    pass

ss = 'foo()'
ff = eval(ss)
assert(type(ff) == types.InstanceType)

Because until version 2.1 of Python any instantiated object has its
type 'instance', but with Python 2.2 this has been changed. Now the
same object if for example is created dynamically with 'eval()' (in my
case) it's a 'new-style'-class and its type-output has been changed:

type(ff) = '__main__.foo'

That's okay, but with my asserts I only wanted to assure that there an
instantiated object, instead of a list or a tuple will be used!

For deeper leveled classes it will look like:

from BBX.Base.corbautil import ORBFacade
orb_facade = ORBFacade()
type(orb_facade)

>>> 'BBX.Base.corbautil.ORBFacade'

I don't want to add the whole nesting level of the testable object in
an 'isinstance'-call nor can I use the assert-statement any longer.

Do you know a short way to assure that the variable is an object
independent of the class-type?

Any comments and issues are appreciated.

Ciao, Georg