How To Print All Objects In A Python Class

In this tutorial, we will learn how to print all objects in a class in Python. This could be helpful when you want to list all the instances of a class for further processing or to display the results interactively.

Step 1: Create a Class

First, let’s create a simple class Person with two attributes: name and age.

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class Person:
    def __init__(self, name, age):
        self.name = name
        self.age = age
 
    def __str__(self):
        return f'{self.name}, {self.age}'

This class can be used to create and store information about different people. The __str__ method allows us to return a formatted string for each instance when we print it.

Step 2: Create Instances of the Class

Now, let’s create some instances of our Person class:

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person1 = Person("Alice", 30)
person2 = Person("Bob", 25)
person3 = Person("Eve", 35)

Step 3: Store Instances in a Collection

We need to keep track of all instances of our class to print them later. We will use a list to store our Person objects:

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people = [person1, person2, person3]

Step 4: Print All Objects in the Class

Now that we have our instances stored in a list, we can iterate through the list and print each object:

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for person in people:
    print(person)

This will output the following:

Alice, 30
Bob, 25
Eve, 35

Full Code

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class Person:
    def __init__(self, name, age):
        self.name = name
        self.age = age
 
    def __str__(self):
        return f'{self.name}, {self.age}'
 
person1 = Person("Alice", 30)
person2 = Person("Bob", 25)
person3 = Person("Eve", 35)
 
people = [person1, person2, person3]
 
for person in people:
    print(person)

Conclusion

In this tutorial, we learned how to print all objects in a class in Python by creating a class, creating instances of the class, storing instances in a collection, and then iterating and printing each object. This technique can be applied to any Python class and allows us to access and display all instances of that class.