上面写着：用完了inpu

Question

这是我创建的一个类

import pickle

class CarRecord:
    def __init__(self):
        self.VehicleID = ""
        self.Registration = ""
        self.DateOfRegistration = None
        self.EngineSize = 0
        self.PurchasePrice = 0.00

ThisCar = CarRecord()
Car = [ThisCar for i in range(5)]
Car[0].EngineSize = 2400
Car[1].EngineSize = 2300
Car[2].EngineSize = 2200
Car[3].EngineSize = 2100
Car[4].EngineSize = 2000

我想把这些记录写入二进制文件

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把记录加到名单的末尾

while True:

我在这里检查文件的结尾

Car.append(pickle.load(CarFile))
CarFile.close()
print(Car)

Answer 1

试试这段代码，你的代码的问题是你做了一段时间真的，这导致了EOF，你需要指定解取长度，或者按照编辑中指定的EOFError句柄。在

import pickle

class CarRecord:
    def __init__(self):
        self.VehicleID = ""
        self.Registration = ""
        self.DateOfRegistration = None
        self.EngineSize = 0
        self.PurchasePrice = 0.00

ThisCar = CarRecord()
Car = [ThisCar for i in range(5)]
Car[0].EngineSize = 2400
Car[1].EngineSize = 2300
Car[2].EngineSize = 2200
Car[3].EngineSize = 2100
Car[4].EngineSize = 2000

CarFile = open('Cars.DAT', 'wb')
for i in range(0,5):
    pickle.dump(Car[i], CarFile)
print(Car)

CarFile.close()
CarFile = open('Cars.DAT', 'rb')
Car = []

print("here")

for i in range(0,5):
    Car.append(pickle.load(CarFile))

CarFile.close()
print(Car)

在编辑：-I找到了一个更好的答案，它不使用硬编码值。Reading from a file using pickle and for loop in python

我也会把答案贴在这里。基本上，它捕获eoferor和UnpicklingError，这样，当文件结束时，它就关闭了，您可以正常使用它

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