如何在python中将几天转换成几年和几个月？

Question

How do I convert days into years and months and days in python? for example: if someone were to be 5,538 days old. how can I display that through years and months and days like this : 15 years old 2 months and 1 day

this is to get user's input

print "Please enter your birthday"
bd_year = int(raw_input("Year: "))
bd_month = int(raw_input("Month: "))
bd_day = int(raw_input("Day: "))

from datetime import date
now = date.today()

birthdate = date(int(bd_year), int(bd_month), int(bd_day))
age_in_days = now - birthdate

print "Your age is %s" % age_in_days

now I need to calculate the person's birthday in years and months and days

Answer 1

How about using dateutil.relativedelta.relativedelta from the dateutil library ? For example:

from dateutil.relativedelta import relativedelta
rdelta = relativedelta(now, birthdate)
print 'Age in years - ', rdelta.years
print 'Age in months - ', rdelta.months
print 'Age in days - ', rdelta.days

Answer 2

Using dateutil.relativedelta.relativedelta is very efficient here: Except for using .months or .days .

because rdelta.months gives you the remaining months after using full years, it doesn't give you the actual difference in months. You should convert years to months if you need to see the difference in months.

def deltamonths(x):
       rdelta = relativedelta(now, birthdate)
       return rdelta.years*12 + rdelta.months