Function overloading in python by R4R Team

-Function overloading is a concept in which we have a multiple function of same name within the class.


program-

#create class
class A():
def add(self,x,y):
return x+y
def add(self,x,y,z):
return x+y+z

#create object
a=A()
print(a.add(1,2,3))
print(a.add(2,3))

output-

6
line 11, in
print(a.add(2,3))

TypeError: add() missing 1 required positional argument: 'z'

-In this program, we have a two function of same name 'add' so python select second add() function by default.
-In some other programming language like c++, this program will not give any kind of error and give the 6 and 5 as a output.

To overcome this error or achieve the function overloading -

program-

#create class
class A():
def add(self,x,y,z=0):
return x+y+z

#create object
a=A()
print(a.add(1,2,3))
print(a.add(2,3))

output-

6
5

-In this program, now we are able to add two number as well as three number