James Tsai <jamestzt...@gmail.com> writes: > I find it very useful if I am allowed to define new local variables in > a list comprehension. For example, I wish to have something like > [(x, y) for x in range(10) for y := x ** 2 if x + y < 80], or > [(x, y) for x in range(10) with y := x ** 2 if x + y < 80]. > > For now this functionality can be achieved by writing > [(x, y) for x in range(10) for y in [x ** 2] if x + y < 80].
x and y are, to a first approximation, new local variables defined in a list comprehension. I think you need to restate what it is you want. > Is it worthwhile to add a new feature like this in Python? If so, how > can I propose this to PEP? To make any sort of case you'd need to give an example that does not have a clearer way to write it already. Your working version is, to me, clearer that the ones you want to be able to write. -- Ben. -- https://mail.python.org/mailman/listinfo/python-list
