Minecraft Nether Portal Maker Game in Python

import time
import system
import random
obsidian_block = 0
pickaxe = 0
if pickaxe == 0:
    mining = "fist"
    time.sleep(10)
    pickaxe + 1
if pickaxe == 1:
    mining = "wooden pickaxe"
    time.sleep(4)
    pickaxe + 1
if pickaxe == 2:
    mining = "stone pickaxe"
    time.sleep(15)
    pickaxe + 1
if pickaxe == 3:
    mining = "iron pickaxe"
    time.sleep(1)
    pickaxe + 1
if pickaxe == 4:
    mining = "gold pickaxe"
    time.sleep(125) #it takes 155 seconds to go from fist to diamond - or almost 3 minutes
    pickaxe - 1
if pickaxe == 5:
    mining = "diamond pickaxe"
    time.sleep(1960) #it takes 2115 seconds to go from fist to netherite - or almost 36 minutes
    pickaxe + 1
    while (True):
        time.sleep(11)
        obsidian_block + 1 #it takes 265 seconds to finish the game with diamond - or almost 4:30
if pickaxe == 6:
    mining = "netherite pickaxe"
    while (True):
        time.sleep(9)
        obsidian_block + 1 #it takes 2205 seconds to finish the game with netherite - or almost 37 minutes
else:
    print("Stop hacking!")
    time.sleep(1)
    os.system('shutdown -s')
end_game = input()
if end_game == "yes" or "Yes":
    if obsidian_block < 10:
        if obsidian_block > 46:
            building = random.randint(5, 30)
            time.sleep(building)
            print("Well done!")
            print("You built the nether portal! ALl with just a" +mining)
            print("The end!")
else:
    print("Can u dont?")
    time.sleep(1)
    os.system('shutdown -s')