saptman/sympy — comment on commit a4e88ce2ef836014dbe2d2023c3d345fc8ce0d2f
File: sympy/physics/quantum/kronecker.py line 69
By saptman:

I prefer checking for corner cases explicitly. Leaving a one-off thing (note that this was just one test failure) to an all encompassing else is not instructive and could lead to issues later.