How to store self values with Pickle?-CodePudding

class Player:
    def __init__(self):
        self.money = 0
        self.level = 0
        self.xp = 0
        self.xp_until_level = 20
        self.taxi_car = "Cabbie"
        self.busines = "Нет"
        self.busines_income = 1000
        self.upgrade_cost = 10000
        self.car_speed = 10
        self.car_level = 0
        self.drives_until_new_car = 20

p = Player()

I don’t know how to save self values. I making my text game and saving data is my number one problem.

CodePudding user response：

self values are attributes of your instance. Just pickle your insntace (here p) and it stores all the attributes:

import pickle

class Player:
    def __init__(self):
        self.money = 0
        self.level = 0
        self.xp = 0
        self.xp_until_level = 20
        self.taxi_car = "Cabbie"
        self.busines = "Нет"
        self.busines_income = 1000
        self.upgrade_cost = 10000
        self.car_speed = 10
        self.car_level = 0
        self.drives_until_new_car = 20

p = Player()

pickled = pickle.dumps(p)
new_obj = pickle.loads(pickled)
print(new_obj.taxi_car)  # Cabbie

CodePudding user response：

Storing the class instance to a binary file:

The class instance (or any other object) can be stored to, or read from, a pickled (serialised) binary file for later use or archiving.

For example:

import pickle

# Create a class instance (as you have done).    
p = Player()

# Store the class instance to a file.
with open('./cabbie.p', 'wb') as f:  # <-- Note the 'wb' mode, for write-binary
    pickle.dump(p, f)
    
# Read the class instance from a file.
with open('./cabbie.p', 'rb') as f:  # <-- Note the 'rb' mode, for read-binary
    data = pickle.load(f)

Testing:

>>> vars(data)

{'money': 0,
 'level': 0,
 'xp': 0,
 'xp_until_level': 20,
 'taxi_car': 'Cabbie',
 'busines': 'Нет',
 'busines_income': 1000,
 'upgrade_cost': 10000,
 'car_speed': 10,
 'car_level': 0,
 'drives_until_new_car': 20}