What is Polymorphism?
Polymorphism is one of the fundamental concepts in object-oriented programming (OOP). It refers to the ability of different classes to share the same attributes and methods while exhibiting different behaviors.
Let's consider an example of polymorphism:
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dct = {1: "first", 2: "second", 3: "third"}
string = "Codefinity"
lst = [1, 2, 3, 4, 5]
print(len(dct)) # counts the keys in dictionary
print(len(string)) # counts the symbols in string
print(len(lst)) # counts the elements in list
1234567dct = {1: "first", 2: "second", 3: "third"} string = "Codefinity" lst = [1, 2, 3, 4, 5] print(len(dct)) # counts the keys in dictionary print(len(string)) # counts the symbols in string print(len(lst)) # counts the elements in list
The len()
function exhibits different behaviors depending on the type of data it operates on. This example serves as a demonstration of polymorphism in action.
Polymorphism Implementation
To implement polymorphism, we can create classes that share the same attributes and methods:
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class User:
role = "User"
def info(self, some_value):
print("This is standart user.", some_value + 100)
class Admin:
role = "Admin"
def info(self, some_value):
print("This is admin of this service.", some_value * 100)
class Hacker:
role = "Hacker"
def info(self, some_value):
print("This person can thief your data.", some_value * 0)
user = User()
admin = Admin()
hacker = Hacker()
lst = [user, admin, hacker]
for item in lst:
print(item.role)
item.info(33)
123456789101112131415161718192021222324252627class User: role = "User" def info(self, some_value): print("This is standart user.", some_value + 100) class Admin: role = "Admin" def info(self, some_value): print("This is admin of this service.", some_value * 100) class Hacker: role = "Hacker" def info(self, some_value): print("This person can thief your data.", some_value * 0) user = User() admin = Admin() hacker = Hacker() lst = [user, admin, hacker] for item in lst: print(item.role) item.info(33)
Note
Polymorphism in Python refers to the ability of objects to exhibit different behaviors while performing the same actions.
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