In programming, polymorphism is a very important concept where a single type entity, such as a method, operator, or object, can represent different types in different situations.<\/p>\n
Example Of Built-in Polymorphic Functions<\/strong><\/p>\n Output<\/strong><\/p>\n 5 Examples Of Custom-defined Polymorphic Functions<\/strong><\/p>\n Output<\/strong><\/p>\n 50 The following code illustrates how Python can similarly utilize two different class types. We iterate through a tuple of objects using a for loop and call the methods without worrying about the specific class type of each object. The assumption here is that these methods exist in each class.<\/p>\n Example<\/strong><\/p>\n Output<\/strong><\/p>\n Capital: New Delhi In Python, Polymorphism allows the definition of methods in the child class with the same name as those in the parent class. With inheritance, the child class inherits methods from the parent class. Nevertheless, there is the flexibility to modify a method in the child class that has been inherited from the parent class. This becomes valuable when the inherited method doesn’t perfectly align with the requirements of the child class. In such scenarios, we can re-implement the method in the child class, a practice referred to as Method Overriding.<\/p>\n Example<\/strong><\/p>\n Output<\/strong><\/p>\n There is a diverse range of animals. It is also feasible to design a function capable of accepting any object, demonstrating polymorphism. In this instance, let’s craft a function named ‘perform_operations()’ designed to take an object, denoted as ‘obj’. Despite the use of the name ‘obj’, any instantiated object can be passed into this function. Subsequently, let’s define a task within the function that involves utilizing the ‘obj’ object. In this scenario, we’ll invoke three methods\u2014namely, ‘get_capital()’, ‘get_language()’, and ‘get_type()’\u2014each defined in the ‘CountryIndia’ and ‘CountryUSA’ classes.<\/p>\n Now, let’s create instances of both the ‘CountryIndia’<\/strong> and ‘CountryUSA’<\/strong> Example<\/strong><\/p>\n Output<\/strong><\/p>\n New Delhi is the capital of India. Output<\/strong><\/p>\n Woof! polymorphism in Python enables the flexibility to use a single entity, such as a function or method, to handle different types. Whether through built-in functions, custom-defined functions, class methods, or inheritance with method overriding, polymorphism enhances code reusability and adaptability. It allows for the seamless interchangeability of objects and methods, promoting a more dynamic and versatile programming approach.<\/p>\n","protected":false},"author":1,"featured_media":52879,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","class_list":["post-44117","faq","type-faq","status-publish","has-post-thumbnail","hentry","faq_topics-kb","faq_topics-product-documentation","faq_topics-python-series","faq_topics-python-polymorphism","faq_topics-tutorial-series","faq_topics-tutorials"],"yoast_head":"\n\r\n# Python program to explain in-built poly-morphic functions\r\n# len() function used for a string\r\nprint(len(\"hello\"))\r\n# len() function used for a list\r\nprint(len([100, 200, 300]))<\/code><\/pre>\n
\n3<\/p>\n\r\n# A basic Python function to illustrate\r\n# Polymorphism\r\ndef addition(a, b, c = 0):\r\nreturn a + b + c\r\n# Driver code\r\nprint(addition(20, 30))\r\nprint(addition(20, 30, 40))<\/code><\/pre>\n
\n90<\/p>\nUsing Polymorphism with Class Methods<\/h2>\n
\r\nclass India():\r\ndef capital(self):\r\nprint(\"Capital: New Delhi\")\r\ndef language(self):\r\nprint(\"Language: Hindi\")\r\ndef type(self):\r\nprint(\"Type: Developing country\")\r\nclass USA():\r\ndef capital(self):\r\nprint(\"Capital: Washington, D.C.\")\r\ndef language(self):\r\nprint(\"Language: English\")\r\ndef type(self):\r\nprint(\"Type: Developed country\")\r\nobj_india = India()\r\nobj_usa = USA()\r\nfor country_instance in (obj_india, obj_usa):\r\ncountry_instance.capital()\r\ncountry_instance.language()\r\ncountry_instance.type()<\/code><\/pre>\n
\nLanguage: Hindi
\nType: Developing country
\nCapital: Washington, D.C.
\nLanguage: English
\nType: Developed country<\/p>\nInheritance with Polymorphism<\/h3>\n
\r\nclass Animal:\r\ndef introduction(self):\r\nprint(\"There is a diverse range of animals.\")\r\ndef movement(self):\r\nprint(\"Many animals can move, but some have distinct modes.\")\r\nclass cheetah(Animal):\r\ndef movement(self):\r\nprint(\"Cheetahs are known for their swift movement.\")\r\nclass turtle(Animal):\r\ndef movement(self):\r\nprint(\"Turtles move at a slow pace.\")\r\nobj_animal = Animal()\r\nobj_cheetah = cheetah()\r\nobj_turtle = turtle()\r\nobj_animal.introduction()\r\nobj_animal.movement()\r\nobj_cheetah.introduction()\r\nobj_cheetah.movement()\r\nobj_turtle.introduction()\r\nobj_turtle.movement()<\/code><\/pre>\n
\nMany animals can move, but some have distinct modes.
\nThere is a diverse range of animals.
\nCheetahs are known for their swift movement.
\nThere is a diverse range of animals.
\nTurtles move at a slow pace.<\/p>\nFunction and Object with Polymorphism<\/h3>\n
\nclasses, assuming they haven’t been instantiated already. With these
\ninstances, we can invoke their actions using the same ‘perform_operations()’ function:<\/p>\n\r\nclass CountryIndia:\r\ndef capital(self):\r\nreturn \"New Delhi is the capital of India.\"\r\ndef language(self):\r\nreturn \"Hindi is the most widely spoken language of India.\"\r\ndef type(self):\r\nreturn \"India is a developing country.\"\r\nclass CountryUSA:\r\ndef capital(self):\r\nreturn \"Washington, D.C. is the capital of USA.\"\r\ndef language(self):\r\nreturn \"English is the primary language of USA.\"\r\ndef type(self):\r\nreturn \"USA is a developed country.\"\r\ndef perform_operations(obj):\r\nprint(obj.capital())\r\nprint(obj.language())\r\nprint(obj.type())\r\nobj_india = CountryIndia()\r\nobj_usa = CountryUSA()\r\nperform_operations(obj_india)\r\nperform_operations(obj_usa)<\/code><\/pre>\n
\nHindi is the most widely spoken language of India.
\nIndia is a developing country.
\nWashington, D.C. is the capital of USA.
\nEnglish is the primary language of USA.
\nUSA is a developed country.<\/p>\nPython Polymorphism with Inheritance and Method Overriding<\/h3>\n
\r\nclass Creature:\r\ndef vocalize(self):\r\nraise NotImplementedError(\"Subclass must implement this method\")\r\nclass Dog(Creature):\r\ndef vocalize(self):\r\nreturn \"Woof!\"\r\nclass Cat(Creature):\r\ndef vocalize(self):\r\nreturn \"Meow!\"\r\n# Create a list of Creature objects\r\ncreatures = [Dog(), Cat()]\r\n# Invoke the vocalize method on each object\r\nfor creature in creatures:\r\nprint(creature.vocalize())<\/code><\/pre>\n
\nMeow!<\/p>\nConclusion<\/h2>\n