Commonly used terms/functions tend to become shorter and symbolized as some notation, similar to how all the Math notation came to be. A mathematician would be

Commonly used terms/functions tend to become shorter and symbolized as some notation, similar to how all the Math notation came to be. A mathematician would be unproductive without those shorthand notations. But I guess there is a balance. Not everyone want to write matrix multiplications as A+.×B, though A%*%B seems acceptable to some, most nowadays write it as np.dot(A,B).