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.widthclass variable in python
# Class variables refer to variables that are made within a class.
# It is generated when you define the class.
# It's shared with all the instance of that class.
# Example:
class some_variable_holder(object):
var = "This variable is created inside the class some_variable_holder()."
def somefunc(self):
print("Random function ran.")
thing = some_variable_holder()
another_thing = some_variable_holder()
# Both does the same thing because the same variable has been passed on from the class.
thing.var
another_thing.varclass python
class A: # define your class A
.....
class B: # define your class B
.....
class C(A, B): # subclass of A and B
obj = C() #to create instance
# issubclass(sub, sup) boolean function returns true if the given
# subclass sub is indeed a subclass of the superclass sup
# isinstance(obj, Class) boolean function returns true if obj is an
# instance of class Class or is an instance of a subclass of ClassCopyright © 2021 Codeinu
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