On Thu, Sep 1, 2022 at 9:16 AM Chris Angelico <ros...@gmail.com> wrote:
> On Fri, 2 Sept 2022 at 02:10, James Tsai <jamestzt...@gmail.com> wrote: > > > > Hello, > > > > 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]. > > > > Is it worthwhile to add a new feature like this in Python? If so, how > can I propose this to PEP? > > Not everything has to be a one-liner. > So true! I like list comprehensions and generator expressions, but sometimes I end up regretting their use when there's a bug, and I have to convert one to a for loop + list.append in order to debug. -- https://mail.python.org/mailman/listinfo/python-list
