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python constructor inheritance

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Joris Degen answered on May 27, 2022 Popularity 7/10 Helpfulness 2/10

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python constructor inheritance

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# this is the class which will become
# the super class of "Subclass" class
class Class():
    def __init__(self, x):
        print(x)
  
# this is the subclass of class "Class"
class SubClass(Class):
    def __init__(self, x):
  
        # this is how we call super
        # class's constructor
        super().__init__(x)
  
# driver code
x = [1, 2, 3, 4, 5]
a = SubClass(x)

Popularity 7/10 Helpfulness 2/10 Language python

Source: www.geeksforgeeks.org

Tags: constructor inheritance python

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Contributed on Oct 20 2022

Joris Degen

0 Answers Avg Quality 2/10

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Inheritance constructor with parameters python

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class Animal:
    def __init__(self, legs, name):
        self.eyes = 2
        self.legs = legs
        self.name = name

    def breathe(self):
        print("Inhale, exhale")
    
    def __str__(self):
        return f"I'm an animal with {self.legs} legs, I'm also called {self.name}"

class Fish(Animal):
    def __init__(self, legs, name):
        super(Fish, self).__init__(legs, name)
    
    def swim(self):
        print("Swimming")

    def __str__(self):
        return f"I'm a fish with {self.legs} legs, I'm also called {self.name}"
    
fish = Fish(0, "Nemo")
fish.breathe()
fish.swim()

print(fish)

Popularity 8/10 Helpfulness 5/10 Language python

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Tags: constructor cons

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Contributed on Jul 13 2022

Bacon Cat

0 Answers Avg Quality 2/10

Python Inheritance

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class BaseClass:
  Body of base class
class DerivedClass(BaseClass):
  Body of derived class

Popularity 10/10 Helpfulness 3/10 Language python

Source: Grepper

Tags: inheritance inhe

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Contributed on May 27 2022

SAMER SAEID

0 Answers Avg Quality 2/10

python inheritance

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class Person:
    residence = "Planet Earth" # Class attribute
    def __init__(self, name, age): # Constructor
        self.name = name # "self" refers to the current instance of a class
        self.age = age # instance attribute
        self.height = 0
    def introduce(self): # instance method
        print(f"Hello, my name is {self.name}")
    @classmethod
    def wake_up(): # class method, defined with @classmethod decorator
        print("Time to start your day!")

john = Person("John Casey", 38) # This invokes a call to __init__
john.age # Retrieve the age instance attribute
print(Person.residence) # class attributes are accessed without an instance
john.introduce() # instance method Called on a Person object
Person.wake_up() # Calling a class method


class Employee(Person): # Inheritance : Employee is the child class, Person is the parent class
    def __init__(self, name, age, title):
        super().__init__(name, age) # this is same as : "Person.__init__(self, name, age)"
        self.title = title
    def introduce(self): # Overriding, changing method in child class which was previously available in parent class
        print(f"""My name is {self.name}, I am a {self.title}""")
    def __eq__(self, other): # Overloading : Customize the behavior of Python operators for a class, applicable to magic methods
        return self.name == other.name

lester = Employee("Lester", 26, "Technician")
lester.introduce() # overriden method called
# Comparison
chuck = Person("Charles Carmichael")
charles = Person("Charles Carmichael")
print(chuck == charles) # Overloading method called

# Multiple inheritance : When a child class has more than one parent
# Multilevel inheritance : In a multiple inheritance, when one of the parent is a derived class itself 
# Method resolution order (MRO) : If multiple parent class has method with same name, access right is children first, then left-to-right as defined in extending the parent class names

class Student:
    def __init__(self, school):
        self.school = school
        self.courses = []
    def add_course(self, course_name):
        self.courses.append(course_name)

class Intern(Employee, Student): # Multiple inheritance
    def __init__(self, department, school, duration):
        # Make a call to BOTH constructors
        Employee.__init__(self, department)
        Student.__init__(self, school)
        self.duration = duration

stephen = Intern("Software Development", "Echo University", 10)
stephen.introduce() # Method from Employee
stephen.add_course("Intermediate OOP in Python") # Method from Student
print(Intern.mro()) # See MRO precedences for same name methods

Popularity 10/10 Helpfulness 3/10 Language python

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Tags: inheritance inhe

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Contributed on Aug 13 2024

Innocent Iguana

0 Answers Avg Quality 2/10

python inheritance

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class Base():
    """ My base class """

    __nb_instances = 0

    def __init__(self):
        Base.__nb_instances += 1
        self.id = Base.__nb_instances

class User(Base):
    """ My User class """

    def __init__(self):
        super().__init__()
        self.id += 99

u = User()
print(u.id)

Popularity 10/10 Helpfulness 2/10 Language python

Source: alx-intranet.hbtn.io

Tags: inheritance inhe

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Contributed on Jul 04 2022

Drab Dolphin

0 Answers Avg Quality 2/10

Python Inheritance

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class Student(Person):
  def __init__(self, fname, lname, year):
    super().__init__(fname, lname)
    self.graduationyear = year
 

x = Student("Michael", "Smith", 2020)

Popularity 10/10 Helpfulness 2/10 Language python

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Tags: inheritance inhe

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Contributed on Jun 29 2022

Javasper

0 Answers Avg Quality 2/10

python inheritance

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# Python code to demonstrate how parent constructors
# are called.
 
# parent class
class Person(object):
 
    # __init__ is known as the constructor
    def __init__(self, name, idnumber):
        self.name = name
        self.idnumber = idnumber
 
    def display(self):
        print(self.name)
        print(self.idnumber)
         
    def details(self):
        print("My name is {}".format(self.name))
        print("IdNumber: {}".format(self.idnumber))
     
# child class
class Employee(Person):
    def __init__(self, name, idnumber, salary, post):
        self.salary = salary
        self.post = post
 
        # invoking the __init__ of the parent class
        Person.__init__(self, name, idnumber)
         
    def details(self):
        print("My name is {}".format(self.name))
        print("IdNumber: {}".format(self.idnumber))
        print("Post: {}".format(self.post))
 
 
# creation of an object variable or an instance
a = Employee('Rahul', 886012, 200000, "Intern")
 
# calling a function of the class Person using
# its instance
a.display()
a.details()

Popularity 9/10 Helpfulness 1/10 Language python

Source: www.geeksforgeeks.org

Tags: inheritance inhe

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Contributed on Feb 14 2023

ABO HUSSEIN

0 Answers Avg Quality 2/10

python constructor inheritance

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