How can a basic metaclass be implemented in Python?

In Python, a metaclass is a class that creates other classes. To implement a basic metaclass, you need to define a class that inherits from type, and override the __new__ or __init__ method to change the class creation behavior.

Example of a basic metaclass that prints the name of the class being created:

class Meta(type):
    def __new__(cls, name, bases, dct):
        print(f"Creating class {name}")
        return super().__new__(cls, name, bases, dct)

class MyClass(metaclass=Meta):
    pass

When defining MyClass, it will output: Creating class MyClass.

Thus, a metaclass allows controlling the class creation process, adding attributes, checking structure, etc.