Convert combobox user input in to date with tkinter

[Yoriz]

from datetime import datetime

day, month, year = ('1', 'January', '2000')
mydate = datetime.strptime(f'{day} {month} {year}', '%d %B %Y')
print(mydate)
today = datetime.now()
print(today)
years = today.year - mydate.year
print(years)

Output:
2000-01-01 00:00:00
2020-06-29 22:21:04.644274
20