Pickle Load Custom Object 参数未对齐

Question

Car.py:

   class Car(object):
        def __init__(self, year=2023, speed=50):
            self.year = year 
            self.speed = speed
            self.word_index = {}

Util.py:

from custom.Car import Car
c1 = Car(2020, 40)
picklefile = open('car.pkl', 'wb')
pickle.dump(c1, picklefile)
    
with open('car.pkl', 'rb') as f:
    c2 = Car(pickle.load(f))

After loading the file, the entire Car object is assigned to self.year. So I end up have: c2.year: The serialized Car object. c2.speed: default speed of 50 instead of 40. What am I missing?

Answer 1

You're passing the output of pickle.load as the first arg (ie year ) to Car 's init method. You don't need to pass the output of loading your pickle file to Car 's constructor. Just use pickle.load .

with open('car.pkl', 'rb') as f:
    c2 = pickle.load(f)