will python 3000 break my code?

[Fredrik Lundh]

Daniel wrote:
>    |     3. be impossible to identify by automatic tools.
>    |     Tim's excellent checkappend.py can spot many
>    |     cases, but not all.
> 
> Actually, this isn't true (that it's impossible).
> If you really like, i'll take a few days of my spring break and write one
> guaranteed to catch every single case. 

how about this one:

    foo = list.append
    for bar in range(100):
        foo(bar, bar, bar)

or this one:

    class Foo:
        def __init__(self):
            self.setup()
            self.add = self.list.append
        def setup(self):
            self.list = []

    foo = Foo()
    foo.add(bar, bar, bar)

</F>