In this article, we will discuss how to search a list of objects in Python.
Searching for a particular or group of objects can be done by iterating through a list.
Syntax:
class_name.object_name
where,
- class_name is the name of the class
- object_name is the name of the object
Example 1:
Create a class Car with the following attributes and perform a search operation that returns cars with price less than 10 Lakhs (10,00,000/-).
Attributes:
- String company
- String modelName
- int price
- int seatingCapacity
Python3
class Car(): # constructor def __init__(self, company, modelName, price, seatingCapacity): self.company = company self.modelName = modelName self.price = price self.seatingCapacity = seatingCapacity# list of car objectscarsList = [Car('Honda', 'Jazz', 900000, 5), Car('Suzuki', 'Alto', 450000, 4), Car('BMW', 'X5', 9000000, 5)]# cars with price less than 10 LakhseconomicalCars = [car for car in carsList if car.price <= 1000000]# print those carsfor car in economicalCars: print(car.company+'--'+car.modelName) |
Output
Honda--Jazz Suzuki--Alto
Example 2
Use the same Car class and search for cars which is having a seating capacity as 4.
Python3
class Car(): # constructor def __init__(self, company, modelName, price, seatingCapacity): self.company = company self.modelName = modelName self.price = price self.seatingCapacity = seatingCapacity# list of car objectscarsList = [Car('Honda', 'Jazz', 900000, 5), Car('Suzuki', 'Alto', 450000, 4), Car('BMW', 'X5', 9000000, 5)]# cars having seating capacity 4smallCars = [car for car in carsList if car.seatingCapacity == 4]# print those carsfor car in smallCars: print(car.company+'--'+car.modelName+'--'+str(car.seatingCapacity)) |
Output
Suzuki--Alto--4
Example 3:
Use the above same Car class, search for BMW company cars and return them.
Python3
class Car(): # constructor def __init__(self, company, modelName, price, seatingCapacity): self.company = company self.modelName = modelName self.price = price self.seatingCapacity = seatingCapacity# list of car objectscarsList = [Car('Honda', 'Jazz', 900000, 5), Car('Suzuki', 'Alto', 450000, 4), Car('BMW', 'X5', 9000000, 5)]# bmw carsBMW_Cars = [car for car in carsList if car.company == 'BMW']# print those carsfor car in BMW_Cars: print(car.company+'--'+car.modelName+'--' + str(car.price)+'--'+str(car.seatingCapacity)) |
Output
BMW--X5--9000000--5
