未腌制的对象与原始对象不匹配

Question

我的程序无法解开我的数据，其中 pickle.load(f) 与 pickle.dump(object,f) 不匹配。 我的问题是以下代码哪里出错了，因为我已经尝试了各种 文件模式与下面我的代码上方列出的相应错误：

f = open(home + '/.GMouseCfg','ab+')

out：它们是不同的

f = open(home + '/.GMouseCfg','ab+', encoding='utf-8')

ValueError：二进制模式不接受编码参数

f = open(home + '/.GMouseCfg','a+')

TypeError: 必须是 str，而不是 bytes

import abc, pprint
from evdev import ecodes as e
from os.path import expanduser

try:
    import cPickle as pickle
except:
    import pickle


class Command(object):
    __metaclass__ = abc.ABCMeta

    @abc.abstractmethod
    def set(self, data):
        """set data used by individual commands"""
        return

    @abc.abstractmethod
    def run(self):
        """implement own method of executing data of said command"""
        return

class KeyCommand(Command):
    def __init__(self, data):
        self.data = data
    def set(data):
        self.data = data
    def run(self):
        pass
    def __str__(self):
        return data

class SystemCommand(Command):
    def __init__(self, data):
        self.data = data
    def set(data):
        self.data = data
    def run(self):
        pass
    def __str__(self):
        return data

if __name__ == '__main__':
    ids = [2,3,4,5,6,7,8,9,10,11,12]
    home = expanduser('~')
    f = open(home + '/.GMouseCfg','a+')
    f.seek(0)

    commands = list()
    commands.append(KeyCommand({3:[e.KEY_RIGHTCTRL,e.KEY_P]}))
    commands.append(SystemCommand({5:['gedit','./helloworld.txt']}))
    pickle.dump(commands,f)
    f.seek(0)
    commands2 = pickle.load(f)
    if commands == commands2:
        print('They are the same')
    else:
        print('They are different')

我已经阅读了大量有关泡菜和文件 io 的 python 文档，但无法辨别为什么我的原始对象和未腌制的对象之间存在差异

Answer 1

酸洗和解酸之后，显然command 和command2 永远不会是同一个对象了。

这意味着commands == commands2 将始终返回False，除非您为您的类实现comparision，例如：

class KeyCommand(Command):
    ...
    def __eq__(self, other):
        return self.data == other.data
    def __ne__(self, other):
        return self.data != other.data
    ...

class SystemCommand(Command):
    ...
    def __eq__(self, other):
        return self.data == other.data
    def __ne__(self, other):
        return self.data != other.data
    ...