
Aug. 31, 2021
7:37 p.m.
On Wed, 1 Sept 2021 at 01:20, Matthias Bussonnier < bussonniermatthias@gmail.com> wrote:
Are there other such classes?
[snip]
... stuff, let's pick a few:
sympy.physics.optics.Medium:
def __eq__(self, other): return self.refractive_index == other.refractive_index
Will crash with None has no attribute refractive_index,
I think that particular __eq__ method is buggy. There should be a general expectation that __eq__ can be used with unexpected types and should return NotImplemented or False rather than raise an exception. Oscar