如何计算年,月,日的人的年龄？

from datetime import date

def calculate_age(birth_date):
    today = date.today()
    age_years = today.year - birth_date.year
    age_months = today.month - birth_date.month
    age_days = today.day - birth_date.day

    if age_months < 0:
        age_years -= 1
        age_months += 12

    if age_days < 0:
        age_months -= 1
        age_days += (birth_date.replace(year=birth_date.year+1) - birth_date).days

    return age_years, age_months, age_days

birth_date = date(1990, 6, 15)
age = calculate_age(birth_date)
print(f"年龄：{age[0]}年{age[1]}月{age[2]}天")