Is it possible to define a new mathematical operator in python?

Question

Is it possible to define my own mathematical operator?

Like the introduction of the new @ in PEP-465 for matrix multiplication or // for integer division.

Something like

a ! b -> a / (a + b)

Adding those new operators required changes to the language. So in theory you can submit a PEP and get it accepted, implemented, and released in a future version of Python. — khelwood, Oct 16 '19 at 10:29

score 2 · Accepted Answer · answered Oct 16 '19 at 10:41

You can use one of the predefined operator that has not been implemented for integers.

For example this one : @ (matmul)

You cannot use ! character as it is not in this list.

class MyInt(int):
    def __matmul__(self, other):
        return self / (self + other)

Then you can do :

a = MyInt(1)
b = MyInt(2)
print(a @ b)

Will print (0.33333333)

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