python - How to convert datetime -

this question has answer here:

• converting string datetime 14 answers

i have code:

from datetime import * surname = "" first_name = "" birth_date = "" nickname = "" class person(object):     def __init__(self, surname, first_name, birth_date, nickname=none):         self.surname = surname         self.first_name = first_name         self.birth_date = datetime.strptime(birth_date, "%y-%m-%d").date()         self.nickname = nickname         if self.nickname none :             self.nickname = self.surname      def get_age(self):         today = date.today()         age = today.year - self.birth_date.year         if today.month < self.birth_date.month:             age -= 1         elif today.month == self.birth_date.month , today.day < self.birth_date.day:             age -= 1         return str(age)     def get_fullname(self):         return self.surname + " " + self.first_name  petroff = person("petrov", "petro", "1952-01-02") print petroff.surname print petroff.first_name print petroff.nickname print petroff.birth_date print petroff.get_fullname() print petroff.get_age() 

print petroff.birth_date give me string "1952-01-02" how can change code, value of petroff.birth_date => datetime.date(1952, 1, 2)

according datetime documentation, __str__ (which called print obtain printable view of object) converts content of date() string "1952-01-02". can still compare date() objects want.