See my following testing with Pauli matrices defined by different sympy modules:

```
In [57]: init_printing(wrap_line=False)
...: from sympy.physics.paulialgebra import Pauli
...: from sympy.physics.matrices import msigma
In [58]: Pauli(1) == msigma(1)
Out[58]: False
```

Why can’t the same Pauli matrices defined by different modules be considered the same?

Regards,

HY