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Python: Creating Objects with Variable Class Names

In Python, classes are used to create objects. Typically, class names are fixed, but there are scenarios where you might want to dynamically change the class name to create objects. In this article, we'll explore how to use variable class names in Python to create objects.

1. Understanding Classes

Let's start by understanding the basics of classes. A class serves as a blueprint for objects and defines how objects of that class should be structured and behave. To define a class, you do the following:

class MyClass:
    def __init__(self, param1, param2):
        self.param1 = param1
        self.param2 = param2

    def some_method(self):
        # Method content
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In the above example, we've defined a class MyClass that includes a constructor __init__ and some methods.

2. Using Variable Class Names

When you want to use variable class names, Python provides a way to dynamically create classes using the built-in type function. Here's how you can do it:

class_name = "MyClass"

# Create a class dynamically using the type function
MyDynamicClass = type(class_name, (object,), {"param1": "value1", "param2": "value2"})

# Create an object
my_object = MyDynamicClass()
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In the code above, we store the class name in the class_name variable and use the type function to dynamically create a class. This class can be used just like any other class. For example:

print(my_object.param1)  # Prints "value1"
print(my_object.param2)  # Prints "value2"
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3. Leveraging Variable Class Names

Using variable class names can enhance the flexibility of your programs. It allows you to implement patterns like the factory pattern or dynamically create objects of different classes as needed.

Top comments (1)

sreno77 profile image
Scott Reno

Do you have a real world example of why you'd do this? In my experience, it's usually not worth the confusion.