How to repeat a choice using random

So I am trying to make a tic tac toe game where you can play against the computer. Because I do not know how to use AI for the computer so it can make a decision, I chose to have it use a random choice. Because it needs to make multiple choices for multiple turns, I want to figure out how to have the 'choice' variable loop, so it makes a different random choice each time the game loops. Here is the code.

import turtle
import random

# Define the screen
screen = turtle.Screen()
screen.setup(width=300, height=300)

# Define the turtle
t = turtle.Turtle()
t.speed(0)

error = "Move already made, you lost a turn"

moves = ["top left", "top mid", "top right", "mid left", "mid mid", "mid right", "bot left", "bot mid", "bot right"]
def top_left():
  t.penup()
  t.goto(-100, 100)
  t.pendown()
  makex()

def top_mid():
  t.penup()
  t.goto(0, 100)
  t.pendown()
  makex()

def top_right():
  t.penup()
  t.goto(100, 100)
  t.pendown()
  makex()

def mid_left():
  t.penup()
  t.goto(-100, 0)
  t.pendown()
  makex()

def mid_mid():
  t.penup()
  t.goto(0, 0)
  t.pendown()
  makex()

def mid_right():
  t.penup()
  t.goto(100, 0)
  t.pendown()
  makex()

def bot_left():
  t.penup()
  t.goto(-100, -100)
  t.pendown()
  makex()

def bot_mid():
  t.penup()
  t.goto(0, -100)
  t.pendown()
  makex()

def bot_right():
  t.penup()
  t.goto(100, -100)
  t.pendown()
  makex()

def pc_top_left():
  t.penup()
  t.goto(-100, 100)
  t.pendown()
  makeo()

def pc_top_mid():
  t.penup()
  t.goto(0, 100)
  t.pendown()
  makeo()

def pc_top_right():
  t.penup()
  t.goto(100, 100)
  t.pendown()
  makeo()

def pc_mid_left():
  t.penup()
  t.goto(-100, 0)
  t.pendown()
  makeo()

def pc_mid_mid():
  t.penup()
  t.goto(0, 0)
  t.pendown()
  makeo()

def pc_mid_right():
  t.penup()
  t.goto(100, 0)
  t.pendown()
  makeo()

def pc_bot_left():
  t.penup()
  t.goto(-100, -100)
  t.pendown()
  makex()

def pc_bot_mid():
  t.penup()
  t.goto(0, -100)
  t.pendown()
  makex()

def pc_bot_right():
  t.penup()
  t.goto(100, -100)
  t.pendown()
  makex()

def makex():
  t.pendown()
  t.left(45)
  t.forward(30)
  t.right(180)
  t.pendown()
  t.forward(60)
  t.penup()
  t.right(180)
  t.forward(30)
  t.right(90)
  t.forward(30)
  t.right(180)
  t.pendown()
  t.forward(60)
  t.penup()
  t.setheading(0)

def makeo():
  t.penup()
  t.right(90)
  t.forward(30)
  t.left(90)
  t.pendown()
  t.circle(30)
  t.penup()
  t.setheading(0)

def user(x, y):
  print(x, y)
  # Top row
  if y <= 150 and y >= 50:
    # Top left
    if x >= -150 and x <= -50:
      if "top left" in moves:
        print('top left')
        top_left()
        moves.remove("top left")
      else:
        print(error)
    # Top Mid
    elif x >= -50 and x <= 50:
      if "top mid" in moves:
        print('top mid')
        top_mid()
        moves.remove("top mid")
      else:
        print(error)
    # Top Right
    elif x >= 50 and x <= 150:
      if "top right" in moves:
        print('top right')
        top_right()
        moves.remove('top right')
      else:
        print(error)
  # Mid row
  elif y <= 50 and y >= -50:
    # Mid left
    if x >= -150 and x <= -50:
      if "mid left" in moves:
        print('mid left')
        mid_left()
        moves.remove('mid left')
      else:
        print(error)
    # Mid Mid
    elif x >= -50 and x <= 50:
      if 'mid mid' in moves:
        print('mid mid')
        mid_mid()
        moves.remove('mid mid')
      else:
        print(error)
    # Mid Right
    elif x >= 50 and x <= 150:
      if 'mid right' in moves:
        print('mid right')
        mid_right()
        moves.remove('mid right')
      else:
        print(error)
  # Bot row
  elif y <= -50 and y >= -150:
    # Bot left
    if x >= -150 and x <= -50:
      if 'bot left' in moves:
        print('bot left')
        bot_left()
        moves.remove('bot left')
      else:
        print(error)
    # Bot Mid
    elif x >= -50 and x <= 50:
      if 'bot mid' in moves:
        print('bot mid')
        bot_mid()
        moves.remove('bot mid')
      else:
        print(error)
    # Bot Right
    elif x >= 50 and x <= 150:
      if 'bot right' in moves:
        print('bot right')
        bot_right()
        moves.remove('bot right')
      else:
        print(error)
  print(moves)

def computer(choice):
  if choice == 'top left':
    pc_top_left()
    moves.remove('top left')

  elif choice == 'top mid':
    pc_top_mid()
    moves.remove('top mid')

  elif choice == 'top right':
    pc_top_right()
    moves.remove('top right')

  elif choice == 'mid left':
    pc_mid_left()
    moves.remove('mid left')

  elif choice == 'mid mid':
    pc_mid_mid()
    moves.remove('mid mid')

  elif choice == 'mid right':
    pc_mid_right()
    moves.remove('mid right')

  elif choice == 'bot left':
    pc_bot_left()
    moves.remove('bot left')

  elif choice == 'bot mid':
    pc_bot_mid()
    moves.remove('bot mid')

  elif choice == 'bot right':
    pc_bot_right()
    moves.remove('bot right')

def board_setup():
  t.penup()
  t.goto(-150, 50)
  t.pendown()
  t.forward(300)
  t.penup()
  t.goto(-150, -50)
  t.pendown()
  t.forward(300)
  t.penup()
  t.left(90)
  t.goto(-50, -150)
  t.pendown()
  t.forward(300)
  t.penup()
  t.goto(50, -150)
  t.pendown()
  t.forward(300)
  t.setheading(0)

# Game loop
board_setup()
screen.listen()
screen.onscreenclick(user)
choice = random.choice(moves)
computer(choice)
screen.mainloop()