Codecademy export

node.py

class Node:
  def __init__(self, value, link_node=None):
    self.value = value
    self.link_node = link_node
    
  def set_next_node(self, link_node):
    self.link_node = link_node
    
  def get_next_node(self):
    return self.link_node
  
  def get_value(self):
    return self.value

script.py

from stack import Stack

print("\nLet's play Towers of Hanoi!!")

#Create the Stacks
stacks = []
left_stack = Stack("Left")
middle_stack = Stack("Middle")
right_stack = Stack("Right")
stacks.append(left_stack)
stacks.append(middle_stack)
stacks.append(right_stack)

#Set up the Game
num_disks = int(input("\nHow many disks do you want to play with?\n"))
while num_disks <= 3:
  num_disks = int(input("Enter a number greater than or equal to 3\n"))

for disk in range(num_disks, 0, -1):
  left_stack.push(disk)

num_optimal_moves = 2 ** num_disks - 1
print(f"\nThe fastest you can solve this game is in {num_optimal_moves} moves")

#Get User Input
def get_input():
  choices = [name.get_name() for name in stacks]
  for choice in choices:
    print(f"Enter {choice[0]} for {choice}")
  user_input = input()
  for choice in choices:
    if user_input == choice[0]:
      for name in stacks:
        if name.get_name() == choice:
          return name
  print(user_input)
  return user_input

        
#Play the Game
num_user_moves = 0
while right_stack.get_size() != num_disks:
  print("\n\n\n...Current Stacks...")
  for stack in stacks:
    stack.print_items()
  while True:
    print("\nWhich stack do you want to move from?\n")
    from_stack = get_input()
    print("\nWhich stack do you want to move to?\n")
    to_stack = get_input()
    if from_stack.is_empty():
      print("\n\nInvalid Move. Try Again")
    elif to_stack.is_empty():
      disk = from_stack.pop()
      to_stack.push(disk)
      num_user_moves += 1
      break
    elif from_stack.peek() < to_stack.peek():
      disk = from_stack.pop()
      to_stack.push(disk)
      num_user_moves += 1
      break
    else:
      print("\n\nInvalid Move. Try Again")
print(f"\n\nYou completed the game in {num_user_moves} moves and the optional moves is {num_optimal_moves}.")

stack.py

from node import Node

class Stack:
  def __init__(self, name):
    self.size = 0
    self.top_item = None
    self.limit = 1000
    self.name = name
  
  def push(self, value):
    if self.has_space():
      item = Node(value)
      item.set_next_node(self.top_item)
      self.top_item = item
      self.size += 1
    else:
      print("No more room!")

  def pop(self):
    if self.size > 0:
      item_to_remove = self.top_item
      self.top_item = item_to_remove.get_next_node()
      self.size -= 1
      return item_to_remove.get_value()
    print("This stack is totally empty.")

  def peek(self):
    if self.size > 0:
      return self.top_item.get_value()
    print("Nothing to see here!")

  def has_space(self):
    return self.limit > self.size

  def is_empty(self):
    return self.size == 0
  
  def get_size(self):
    return self.size
  
  def get_name(self):
    return self.name
  
  def print_items(self):
    pointer = self.top_item
    print_list = []
    while(pointer):
      print_list.append(pointer.get_value())
      pointer = pointer.get_next_node()
    print_list.reverse()
    print("{0} Stack: {1}".format(self.get_name(), print_list))