Python 怪异行为继承类列表

我正在构建一个语音识别系统，并为此构建了一个命令界面。它们由主语、动词、形容词和通配符组成。我是这样实现的:

class IWord(object): 
    strings = [] 
 
    def recognize(self, word): 
        return word in self.strings 
 
    def add_synonym(self, word): 
        self.strings.append(word) 
 
 
class Verb(IWord): 
    def __init__(self, words): 
        for word in words: 
            self.add_synonym(word) 
 
 
class Adjective(IWord): 
    def __init__(self, words): 
        for word in words: 
            self.add_synonym(word) 
 
 
class Object(IWord): 
    def __init__(self, words): 
        for word in words: 
            self.add_synonym(word) 
 
 
class WildCard(IWord): 
    def recognize(self, word): 
        return word is not None & word 
 
 
class ICommand(object): 
    words = [] 
    parameters = [] 

但是我有两个继承自 ICommand 的类:

class Command1(ICommand): 
 
    def __init__(self): 
        self.words.append(Verb(['do'])) 
        self.words.append(Object(['some'])) 
        self.words.append(WildCard()) 
 
class Command1(ICommand): 
 
    def __init__(self): 
        self.words.append(Verb(['lorem'])) 

当我调试这部分时:

for command in self.Commands: 
    if command.recognize(text): 
        return command 

似乎 command.words 包含“do”、“some”、通配符和“lorem”。我不明白那里出了什么问题。

请您参考如下方法:

self.words 是ICommand 类的words 属性(继承时不复制)。因此，当您追加到它时，它将追加到 ICommand 上，这将影响从它继承的每个类。

不过，也许更好的做法是:

class Command(object): 
  def __init__(self, words): 
    self.words = words