ООП ДЗ 2

from functools import total_ordering

@total_ordering
class Fraction:
    def __init__(self, numerator, demoninator):
        numerator / demoninator
        self.numerator = numerator
        self.demoninator = demoninator
    def _reduce(self): #NOD
        a = self.numerator
        b = self.demoninator
        while b != 0:
            a, b = b, a%b
        self.numerator //= a
        self.demoninator //= a
        return self
    def __str__(self):
        self._reduce()
        if abs(self.numerator) >= abs(self.demoninator):
            if self.numerator % self.demoninator != 0:
                return str(self.numerator // self.demoninator) + " " + str(self.numerator % self.demoninator) + '/' + str(self.demoninator)
            if self.numerator % self.demoninator == 0:
                return str(self.numerator // self.demoninator)
        elif self.numerator == 0:
            return str(0)
        else:
            return str(self.numerator) + "/" + str(self.demoninator)
    def __add__(self, other):
        if type(other) == int:
            other =  Fraction(other, 1)
        return Fraction(self.numerator * other.demoninator + self.demoninator * other.numerator, self.demoninator * other.demoninator)
    def __radd__(self, other):
        return self + other
    def __eq__(self, other):
       self._reduce()
       other._reduce()
       return self.numerator == other.numerator and self.demoninator == other.demoninator
    def __it__(self, other):
        self._reduce()
        other._reduce()
        return self.numerator * other.demoninator - other.numerator * self.demoninator < 0
    def __float__(self):
        return self.numerator / self.demoninator
    def __floordiv__(self, other):
        return Fraction(self.numerator * other.demoninator, self.demoninator * other.numerator)
    def __mul__(self, other):
        return Fraction(self.numerator * other.numerator, self.demoninator * other.demoninator)
    def __sub__(self, other):
        if type(other) == int:
            other =  Fraction(other, 1)
        if type(self) == int:
            self = Fraction(self, 1)
        return Fraction(self.numerator * other.demoninator - self.demoninator * other.numerator, self.demoninator * other.demoninator)
    def __neg__(self):
        return Fraction(-self.numerator, self.demoninator)

f = Fraction(4, 2)
d = Fraction(2, 5)