Possible bug in pdb module in Python 3 when using list generators

Question

After running this code in Python 3:

import pdb

def foo():
    nums = [1, 2, 3]
    a = 5
    pdb.set_trace()

foo()

The following expres

Answer 1

I just can't understand why you would need to do the above if you are looking to produce a list of Trues for each element in seq then why not [True for x in seq] - I would guess that you need to assign a local copy first before trying this sort of thing.