create and use python classes
class Mammal:
def __init__(self, name):
self.name = name
def walk(self):
print(self.name + " is going for a walk")
class Dog(Mammal):
def bark(self):
print("bark!")
class Cat(Mammal):
def meow(self):
print("meow!")
dog1 = Dog("Spot")
dog1.walk()
dog1.bark()
cat1 = Cat("Juniper")
cat1.walk()
cat1.meow()how to make a class in python
class Person:
def __init__(self, _name, _age):
self.name = _name
self.age = _age
def sayHi(self):
print('Hello, my name is ' + self.name + ' and I am ' + self.age + ' years old!')
p1 = Person('Bob', 25)
p1.sayHi() # Prints: Hello, my name is Bob and I am 25 years old!declare class python
# To create a simple class:
class Shape:
def __init__():
print("A new shape has been created!")
pass
def get_area(self):
pass
# To create a class that uses inheritance and polymorphism
# from another class:
class Rectangle(Shape):
def __init__(self, height, width): # The constructor
super.__init__()
self.height = height
self.width = width
def get_area(self):
return self.height * self.widthclasses in python
class Fan:
def __init__(self, company, color, number_of_wings):
self.company = company
self.color = color
self.number_of_wings = number_of_wings
def PrintDetails(self):
print('This is the brand of',self.company,'its color is', self.color,' and it has',self.number_of_wings,'petals')
def switch_on(self):
print("fan started")
def switch_off(self):
print("fan stopped")
def speed_up(self):
print("speed increased by 1 unit")
def speed_down(self):
print("speed decreased by 1 unit")
usha_fan = Fan('usha','skin',5)
fan = Fan('bajaj','wite', 4)
print('these are the details of this fan')
usha_fan.PrintDetails()
print()
usha_fan.switch_on()classes in python
class Foo:
def __init__(self):
self.definition = Foo!
def hi():
# Some other code here :)
# Classes require an __init__ if you want to assign attributes. (self) defines what describes the attribs.classes in python
# Python classes
class Person():
# Class object attributes (attributes that not needed to be mentioned when creating new class of person)
alive = True
def __init__(self, name, age):
# In the __init__ method you can make attributes that will be mentioned when creating new class of person
self.name = name
self.age = age
def speak(self):
# In every method in class there will be self, and then other things (name, age, etc.)
print(f'Hello, my name is {self.name} and my age is {self.age}') # f'' is type of strings that let you use variable within the string
person_one = Person('Sam', 23) # Sam is the name attribute, and 23 is the age attribute
person_one.speak() # Prints Hello, my name is Sam and my age is 23
==================================================================
# Output:
>>> 'Hello, my name is Sam and my age is 23'Copyright © 2021 Codeinu
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