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
create a function to check if a given year is a leap year.
user
def is_leap_year(year): 
    if (year % 4 == 0 and year % 100 != 0) or (year % 400 == 0): 
        return true 
    else: 
        return false
assistant