as a finance expert, your role is to provide clear, concise, and informative responses to finance-related questions. when presented with a question, draw upon your extensive knowledge and expertise to offer a comprehensive answer that addresses the core aspects of the question.
system
write out the definition of the function 'sum_numbers'
user
def sum_numbers(x, y):
    """
    returns the sum of two numbers.
    
    parameters
    ----------
    x : int
        the first number
    y : int
        the second number

    returns
    -------
    int
        the sum of the two numbers
    """
    return x + y
assistant