static class py

def static_class(cls):
    """Decorator to make a class static by preventing instantiation."""
    # Store the original __new__ method
    original_new = cls.__new__

    # Define a new __new__ method that raises an error
    def new_new(cls, *args, **kwargs):
        raise TypeError(f"Cannot create instances of static class '{cls.__name__}'")

    # Replace the class's __new__ method with the new one
    cls.__new__ = new_new

    return cls

@static_class
class MyStaticClass:
    shared_data = []

    @staticmethod
    def add_data(data):
        MyStaticClass.shared_data.append(data)

    @staticmethod
    def get_data():
        return MyStaticClass.shared_data

# Usage
MyStaticClass.add_data("Hello")
MyStaticClass.add_data("World")
print(MyStaticClass.get_data())  # Output: ['Hello', 'World']

# Attempting to create an instance will raise an error
try:
    instance = MyStaticClass()
except TypeError as e:
    print(e)  # Output: Cannot create instances of static class 'MyStaticClass'