class toto:
    def __init__(self, a, b, c):
        self.a = a
        self.b = b
        self.c = c

    def is_square(self):
        if self.a**2 + self.b**2 == self.c**2:
            return True
        else:
            return False

t = toto(3,4,5)

print(t.is_square())