[IPython-dev] Bug with __del__methods on exit

[Thomas Kluyver]

Hi,

I recently found a problem in my python 3 port of ipython, where the __del__
method of objects, called as the program was exiting, could not find global
functions.

On a hunch, I've just tested this in standard ipython, both 0.10 (in Ubuntu)
and trunk. The problem exists in both cases (it only came to light in Python
3 because print is a function). The minimal code to reproduce it is:

class A(object):
    def __del__(self):
        input("ABC")

a = A()
exit()

Which gives: Exception NameError: "global name 'input' is not defined" in
<bound method A.__del__ of <__main__.A object at 0x98634cc>> ignored

Thanks,
Thomas
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