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
how would you solve the following programming problem:

write a function called "iscapital" that takes a single character and returns a boolean value indicating if the character is a capital letter or not.
user
def iscapital(char):
    if ord(char) >= 65 and ord(char) <= 90:
        return true
    else:
        return false
assistant