Please check code

[Evgeniy2019]

else:
 age = (year - birth_year) - 1

Don't think about code, just think about logic. This code will only run if the birth year is less than, or equal to, the current year. Which means either someone born this year (or at some point in the future). What should that person's age be?

and so?

import datetime
# Step 2
birth_day = int(input("Day of birth: "))
birth_month = int(input("Month of birth: "))
birth_year = int(input("Year of birth: "))
day = int(datetime.date.today().day)
month = int(datetime.date.today().month)
year = int(datetime.date.today().year)
# Step 3
if birth_month < month:
 age = year - birth_year
else:
 age = (year - birth_year) - 1
# Step 4
a = age
b = (month - birth_month)
c = (day - birth_day)
print(f"Your age: {a} years, {b} months, {c} days")