Could you help with this bug I have looked for like 20 minutes

[ryder5227]

import Items

class Player:
    def __init__(self):
        self.inventory = [items.RedBloodCell()]
        self.hp = 100
        self.location_x, self.location_y = world.starting_position
        self.vicory = false

    def is_alive(self):
        return self.hp > 0

    def move(self, dx, dy):
        self.location_x += dx
        self.location_y += dy
        print(world.tile_exists(self.location_x, self.location_y).intro_text())

    def move_north(self):
        self.move(dx=0, dy=1)

    def move_south(self):
        self.move(dx=0, dy=1)

    def move_east(self):
        self.move(dx=1, dy=0)

    def move_west(self):
        self.move(dx=1, dy=0)

    def attack(self, enemy):
        best_weapon = None
max_dmg = 0
if isinstance: Items.Vaccine()

if i.damage > max_dmg:
    best_weapon = i

print("You use Vaccine against Flu!".format(best_weapon.name))
enemy.hp -= best_weapon.damage
if not enemy.is_alive():
    print ("You killed Flu!".format (enemy.name))
else:
    print ("Hp is 0.".format(enemy.name, enemy.hp))

TypeError: object.__init__() takes exactly one argument (the instance to initialize) on line 33 and 15