python - How to create and compare datetimes in custom class? -

i'm writing __init__ , __eq__ functions class photo, involving datetime module. however, i'm unsure of __init__ function body i've written , how test __eq__.

this have __init__ function:

class photo:     'fields: size, pdate'     # purpose: constructor class photo     # __init__: int int int int -> photo     # note: function definition needs self parameter , not require return statement     def __init__(self, size, year, month, day):         self.size = size         self.pdate = year + month + day 

i think self.pdate wrong i'm not sure i'm supposed write instead. perhaps following?

self.pdate = year self.date = month self.date = day 

from documentation of datetime module, can create datetime.date objects using following:

from datetime import date  some_random_date = date(2013, 7, 28) not_so_random = date.today() 

for use case, kind of objects want affect self.pdate attribute:

from datetime import date  class photo:     'fields: size, pdate'     # purpose: constructor class photo     # __init__: int int int int -> photo     # note: function definition needs self parameter , not require return statement     def __init__(self, size, year, month, day):         self.size = size         self.pdate = date(year, month, day) 

and in order compare 2 of objects:

    def __eq__(self, other):         # test other photo, left exercise         return self.size == other.size , self.pdate == other.pdate     def __ne__(self, other):         return self.size != other.size or self.pdate != other.pdate