Im not sure how to operate a pickle file. I am trying to populate data to my .pkl file and I do not know if I write data to it manually or have to write it through my pickle_demo.py file. Can you instruct me on how to get data from pickle to .pkl. Currently my players.pkl file is empty. pickle_demo.py import os import os.path import pickle import locale from blackjackgame.player import Player def main(): """Load or create player data and save it to a file.""" players = "name name name name name".split() num_players = None main_dir = os.path.dirname(os.path.abspath(__file__)) data_dir = os.path.join(main_dir, "data") pickle_file = os.path.join(data_dir, "players.pkl") locale.setlocale(locale.LC_ALL, "en_US.utf8") if os.path.exists(pickle_file): with open(pickle_file, "rb") as file_handle: players = pickle.load(file_handle) num_players = len(players) else: while num_players is None or num_players > 4 or num_players < 1: num_players = int(input("How many players (1-4)? ")) if num_players > 4 or num_players < 1: print("Please select a number between 1 and 4") print(f"Let's make {num_players} players...") players = [ Player( name=input(f"Enter name for player {i + 1}: "), player_id=i + 1, ) for i in range(num_players) ] print("We made the following players:") for player in players: print(f"{player.name} has {locale.currency(player.bankroll)}") print("Let's save the players to a file...") if not os.path.exists(data_dir): os.mkdir(data_dir) with open(pickle_file, "wb") as file_handle: pickle.dump(players, file_handle, pickle.HIGHEST_PROTOCOL) if __name__ == "__main__": main() players.pkl // file empty. I do not know what to write // upvote.

1. Im not sure how to operate a pickle file. I am trying to populate data to my .pkl file and I do not
know if I write data to it manually or have to write it through my pickle_demo.py file. Can you
instruct me on how to get data from pickle to .pkl. Currently my players.pkl file is empty.
pickle_demo.py
import os
import os.path
import pickle
import locale
from blackjackgame.player import Player
def main():
"""Load or create player data and save it to a file."""
players = "name name name name name".split()
num_players = None
main_dir = os.path.dirname(os.path.abspath(__file__))
data_dir = os.path.join(main_dir, "data")
pickle_file = os.path.join(data_dir, "players.pkl")
locale.setlocale(locale.LC_ALL, "en_US.utf8")
if os.path.exists(pickle_file):
with open(pickle_file, "rb") as file_handle:
players = pickle.load(file_handle)
num_players = len(players)
else:
while num_players is None or num_players > 4 or num_players < 1:

2. num_players = int(input("How many players (1-4)? "))
if num_players > 4 or num_players < 1:
print("Please select a number between 1 and 4")
print(f"Let's make {num_players} players...")
players = [
Player(
name=input(f"Enter name for player {i + 1}: "),
player_id=i + 1,
)
for i in range(num_players)
]
print("We made the following players:")
for player in players:
print(f"{player.name} has {locale.currency(player.bankroll)}")
print("Let's save the players to a file...")
if not os.path.exists(data_dir):
os.mkdir(data_dir)
with open(pickle_file, "wb") as file_handle:
pickle.dump(players, file_handle, pickle.HIGHEST_PROTOCOL)
if __name__ == "__main__":
main()
players.pkl

3. // file empty. I do not know what to write
// upvote