Polymorphism in Python

Polymorphism in Python, Object-Oriented Programming, Method Overloading, Method Overriding, Compile-time & Run-time Polymorphism in Python.

Polymorphism – Many ways/forms

Polymorphism is an important concept in programming. It refers to the use of a single type entity (method, operator, or object) to represent different types in different scenarios.

Example 1: Polymorphism in addition operator:

The + operator is used extensively in Python programs. But, it does not have a single usage.

For number data types, + operator is used to perform arithmetic addition operation.

num1 = 10
num2 = 20
print(num1+num2)
num1 = 10.23
num2 = 20.45
print(num1+num2)

Similarly, for string data types, + operator is used to perform concatenation.

str1 = “Python ”
str2 = “Programming”
print(str1+str2)

Example 2: Function Polymorphism in Python:

There are some functions in Python which are compatible to run with multiple data types.

One such function is the len() function. It can run with many data types in Python.

print(len(“Python”))
print(len([“Python”, “Java”, “C”, “C++”, “Ruby”, “Kotlin”]))
print(len({“Windows”, “UNIX”, “Solaris”, “Linux”, “Macintosh”, “Android”}))

Example 3: Polymorphism with Class Methods

class Country1():
def name(self):
print (“It is India”)
def capital(self):
print (“Capital city is New Delhi”)
class Country2():
def name(self):
print (“It is USA”)
def capital(self):
print (“Capital city is Washington, D.C.”)
object1 = Country1()
object2 = Country2()
object1.name()
object1.capital()
print(“”)
object2.name()
object2.capital()
class Country1():
def name(self):
print (“It is India”)
def capital(self):
print (“Capital city is New Delhi”)
class Country2(Country1):
def name(self):
print (“It is USA”)
def capital2(self):
print (“Capital city is Washington, D.C.”)
myobject = Country2()
myobject.name()
myobject.capital()
———————————
class Class1():
def programmer(self):
print(“I am a Python Programmer”)
class Class2(Class1):
def programmer(self):
print(“I am a Java Programmer”)
myobject = Class2()
myobject.programmer()
myobject.programmer()