Python – How to Print next year from current year in Python


How can I print the next year if the current year is given in python using the simplest code, possibly in one line using datetime module.

Best Solution

Both date and datetime objects have a year attribute, which is a number. Just add 1:

>>> from datetime import date
>>> print + 1

If you have the current year in a variable, just add 1 directly, no need to bother with the datetime module:

>>> year = 2012
>>> print year + 1

If you have the date in a string, just select the 4 digits that represent the year and pass it to int:

>>> date = '2012-06-26'
>>> print int(date[:4]) + 1

Year arithmetic is exceedingly simple, make it an integer and just add 1. It doesn't get much simpler than that.

If, however, you are working with a whole date, and you need the same date but one year later, use the components to create a new date object with the year incremented by one:

>>> today =
>>> print date(today.year + 1, today.month,

or you can use the .replace function, which returns a copy with the field you specify changed:

>>> print today.replace(year=today.year + 1)

Note that this can get a little tricky when today is February 29th in a leap year. The absolute, fail-safe correct way to work this one is thus:

def nextyear(dt):
       return dt.replace(year=dt.year+1)
   except ValueError:
       # February 29th in a leap year
       # Add 365 days instead to arrive at March 1st
       return dt + timedelta(days=365)