def hello():
    print("Hello, world!")

def add(a, b):
    return a + b

def complex_function(a, b, c=None, *args, **kwargs):
    """A more complex function."""
    pass

async def async_hello():
    print("Async hello")

class MyClass:
    def method_one(self):
        pass

    @staticmethod
    def static_method():
        pass