python

class KashemsHotel:

def__init__(self):

self.hotel_name = “kashem_er_hotel”

deftehari(self):

print(“Tehari, Introduced by Kashem!”)

defserve_tehari(self):

self.tehari()

return “Kashems Tehari”

defserve_kashem(self):

print(f“Serving {self.serve_tehari()}”)

class HashemsHotel(KashemsHotel):

def__init__(self):

self.hotel_name = “hashem_er_hotel”

defkacci(self):

print(“Kacci, Introduce by Hashem!”)

defserve_kacci(self):

self.kacci()

return “Kacci”

defabbajan_er_shorone_sorbot(self):

print(“Sorbot, Introduced by Hashem!”)

defserve_abbajan_er_shorone_sorbot(self):

self.abbajan_er_shorone_sorbot()

return “Abbajan er shorone sorbot”

defserve_hashem(self, food=“Tehari”):

if food == “Tehari”:

print(f“Serving {self.serve_tehari()} and {self.serve_abbajan_er_shorone_sorbot()}”)

else:

print(f“Serving {self.serve_kacci()} and {self.serve_abbajan_er_shorone_sorbot()}”)

print(“*** Parent class is called. ***”)

kashems_hotel = HashemsHotel()

kashems_hotel.serve_kashem()

print(“*** Child class is called. ***”)

hashems_hotel = HashemsHotel()

print(“>>>Call for parent classes tehari, from child class”)

hashems_hotel.serve_hashem(“Tehari”)

print(“>>>Call for child class’s Kacci”)

hashems_hotel.serve_hashem(“Kacci”)
 

// output

*** Parent class is called. ***

Tehari, Introduced by Kashem!

Serving Kashems Tehari

*** Child class is called. ***

>Call for parent classes tehari, from child class

Tehari, Introduced by Kashem!

Sorbot, Introduced by Hashem!

Serving Kashems Tehari and Abbajan er shorone sorbot

>Call for child class‘s Kacci

Kacci, Introduce by Hashem!

Sorbot, Introduced by Hashem!

Serving Kacci and Abbajan er shorone sorbot
 

class ChildClass(ParentClass1, ParentClass2, ParentClass3):

pass
 

python

class Parent:

defcommon_feature_1(self):

print(“Common feature 1”)

defcommon_feature_2(self):

print(“Common feature 2”)

class Child1(Parent):

defchild_1_feature(self):

print(“Child 1 feature”)

class Child2(Parent):

defchild_2_feature(self):

print(“Child 2 feature”)

print(“\n** Child 1 Calling **”)

child1 = Child1()

child1.common_feature_1()

child1.common_feature_2()

child1.child_1_feature()

print(“\n** Child 1 Calling **”)

child2 = Child2()

child2.common_feature_1()

child2.common_feature_2()

child2.child_2_feature()



// output

// ** Child 1 Calling **

// Common feature 1

// Common feature 2

// Child 1 feature

// ** Child 1 Calling **

// Common feature 1

// Common feature 2

// Child 2 feature
 

python

from abc import ABC, abstractmethod

Class AbstractClass(ABC):

@abstractmethod

defprocess(self):

”‘No body’”

pass
 

python

class KashemsHotel:

def__init__(self):

self.hotel_name = “kashem_er_hotel”

defaddress(self):

print(“123, Puran Dhaka!”)

deftehari(self):

print(“Tehari, Introduced by Kashem!”)

defserve_tehari(self):

self.tehari()

return“Kashems Tehari”

defserve_kashem(self):

print(f“Serving {self.serve_tehari()}”)

classHashemsHotel(KashemsHotel):

def__init__(self):

self.hotel_name = “hashem_er_hotel”

defaddress(self):

print(“456, Puran Dhaka!”)

defkacci(self):

print(“Kacci, Introduce by Hashem!”)

defserve_kacci(self):

self.kacci()

return“Kacci”

defabbajan_er_shorone_sorbot(self):

print(“Sorbot, Introduced by Hashem!”)

defserve_abbajan_er_shorone_sorbot(self):

self.abbajan_er_shorone_sorbot()

return“Abbajan er shorone sorbot”

defserve_hashem(self, food=“Tehari”):

if food == “Tehari”:

print(f“Serving {self.serve_tehari()} and {self.serve_abbajan_er_shorone_sorbot()}”)

else:

print(f“Serving {self.serve_kacci()} and {self.serve_abbajan_er_shorone_sorbot()}”)

print(“*** Parent class is called. ***”)

kashems_hotel = HashemsHotel()

print(“*** Child class is called. ***”)

hashems_hotel = HashemsHotel()

hashems_hotel.address()

আউটপুট

// *** Parent class is called. ***

// *** Child class is called. ***

// 456, Puran Dhaka!
 

python

print(“*** Parent class is called. ***”)

kashems_hotel = HashemsHotel()

print(“*** Child class is called. ***”)

hashems_hotel = HashemsHotel()

print(hashems_hotel.hotel_name)
 

// *** Parent class is called. ***

// *** Child class is called. ***

// hashem_er_hotel
 

class Vehicle:

def__init__(self,manufacturer):

self.manufacturer = manufacturer

class Car(Vehicle):

def__init__(self,manufacturer,model):

super().__init__(manufacturer)

self.model = model

class Truck(Vehicle):

def__init__(self, manufacturer,model):

super().__init__(manufacturer)

self.model = model

class Electric(Car):

def__init__(self, manufacturer, model, charge_time):

super().__init__(manufacturer, model)

self.charge_time = charge_time

def__str__(self):

return f“{self.manufacturer} made {self.model}”

class Petrol(Car):

def__init__(self, manufacturer, model, capacity):

super().__init__(manufacturer, model)

self.capacity = capacity

def__str__(self):

return f“{self.manufacturer} made {self.model}”

obj1 = Electric(“Tesla”,“Model S” , “5 hour”)


obj2 = Petrol(“Toyota”, “Corolla”, “50 Liter”)

print(obj1)

print(obj2)