__add__ and __radd__

Question

can someone explain me the differences between __add__ and __radd__ with the help of a simple program.

Answer 1

https://code.sololearn.com/cwQ8Y3eDyov1/?ref=app

Answer 2

Check the following code example,

https://code.sololearn.com/cK03N0e1YE9U/?ref=app

Answer 3

__add__ stand for "addition"
__radd__ stand for "right addition"

default addition of a+b is done by calling a.__add__(b) so technically __add__(a,b)...

if class of a doesn't implement the __add__ method, then if class of b has __radd__ method, a+b us rather done by calling b.__radd__(a) so technically __radd__(b,a)...

Answer 4

Runtime Terror can you explain using a program .?plz.
I did not get what you said😅

Answer 5

visph can we use __radd__ method for the objects of same classes ?
If yes then how ?

Answer 6

kushal no, for same class addition, the __add__ method only is called... even if you implement only __radd__ (and not __add__), you'll get an argument error ^^