Finding How Many Hours Between Two Dates Without Using DateTime

I’ve written a code like that but it’s giving me an error. I shouldn’t use DateTime code by the way.

  aylar = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]
def countLeapYears(d):
 
    years = d.y
    if (d.m <= 2):
        years -= 1
    ans = int(years / 4)
    ans -= int(years / 100)
    ans += int(years / 400)
    return ans
def getDifference(dt1, dt2):
    n1 = dt1.y * 365 + dt1.d
    for i in range(0, dt1.m - 1):
        n1 += aylar[i]
    n1 += countLeapYears(dt1)
    n2 = dt2.y * 365 + dt2.d
    for i in range(0, dt2.m - 1):
        n2 += aylar[i]
    n2 += countLeapYears(dt2)
    return (n2 - n1)
class Tarih:                         
   def _init_(self, d, m, y,s): 
     self.d = d                           
     self.m = m
     self.y = y
     self.s = s
     
tarih1 = Tarih(1, 12, 2021,0)
tarih2 = Tarih(4, 12, 2021,23)
farkgun=getDifference(tarih1,tarih2)
if(tarih1.s>tarih2.s):
    farkgun=farkgun-1
    tarih2.s=tarih2.s+24
print("Iki tarih arasindaki fark: ",farkgun,"gun.")
print("Iki tarih arasindaki saat: ",(farkgun*24)+(tarih2.s-tarih1.s),"saat.")

And the error is here:

error

Can anyone explain what is wrong with that code?

>Solution :

Seems like you made a typo here

class Tarih:                         
   def init(self, d, m, y,s): 

In python you should declare constructor with __init__ function

class Tarih:                         
   def __init__(self, d, m, y,s):