Because the function has three parameters, every time the function is called, it must be supplied with three arguments. This is the default behavior for Python functions; the number of parameters and ...

I think it's due to the overhead associated with casting back and forth, and for the reasons Python is slow (interpreted, dynamic typing, etc). The other parts of the code have sped up significantly, ...

M4N asks:. Is there a reason why functions in most(?) programming languages are designed to support any number of input parameters but only one return value?