1+ # importing the date module from the datetime package
2+ from datetime import date
3+ 4+ # defining a function calculate the age
5+ def calculate_age (birthday ):
6+ 7+ # using the today() to retrieve today's date and stored it in a variable
8+ today = date .today ()
9+ 10+ # a bool representing if today's day, or month precedes the birth day, or month
11+ day_check = ((today .month , today .day ) < (birthday .month , birthday .day ))
12+ 13+ # calculating the difference between the current year and birth year
14+ year_diff = today .year - birthday .year
15+ 16+ # The difference in years is not enough.
17+ # We must subtract 0 or 1 based on if today precedes the
18+ # birthday's month/day from the year difference to get it correct.
19+ # we will subtract the 'day_check' boolean from 'year_diff'.
20+ # The boolean value will be converted from True to 1 and False to 0 under the hood.
21+ age_in_years = year_diff - day_check
22+ 23+ # calculating the remaining months
24+ remaining_months = abs (today .month - birthday .month )
25+ 26+ # calculating the remaining days
27+ remaining_days = abs (today .day - birthday .day )
28+ 29+ # printing the age for the users
30+ print ("Age:" , age_in_years , "Years" , remaining_months , "Months and" , remaining_days , "days" )
31+ 32+ # main function
33+ if __name__ == "__main__" :
34+ 35+ # printing an opening statement
36+ print ("Simple Age Calculator" )
37+ 38+ # asking user to enter birth year, birth month, and birth date
39+ birthYear = int (input ("Enter the birth year: " ))
40+ birthMonth = int (input ("Enter the birth month: " ))
41+ birthDay = int (input ("Enter the birth day: " ))
42+ 43+ # converting integer values to date format using the date() method
44+ dateOfBirth = date (birthYear , birthMonth , birthDay )
45+ 46+ # calling the function to calculate the age of a person
47+ calculate_age (dateOfBirth )
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