Python 中关于多重继承的怪癖！至少我这么认为
我一直在研究与此类似的多重继承代码：
class Document():
def save(self, x):
print "inside Document from " + x
class Cdm(object):
def save(self,x):
print "inside Cdm from " + x
super(Cdm,self).save('Cdm')
class Contacts(Cdm, Document):
def __init__(self):
self.save('Contacts')
这是我创建联系人实例时得到的结果。
> c = Contacts()
< inside Cdm from Contacts
< inside Document from Cdm
现在这很奇怪，可能在我看来。我可能误会了什么。正如您所看到的，Contacts 类继承自 cdm 和 Document。我正在尝试使用联系人中 Cdm 的保存方法。但是Cdm继承自object并且没有名为save的超类方法，但它从Document类调用save函数。在我正在工作的程序中，这是我想要的行为，但我很担心，因为理论上它不应该起作用，或者至少我认为是这样。
您对此有何评论？或者我误解了Python的继承。
I have been working on a multiple inheritance code which looks similar to this:
class Document():
def save(self, x):
print "inside Document from " + x
class Cdm(object):
def save(self,x):
print "inside Cdm from " + x
super(Cdm,self).save('Cdm')
class Contacts(Cdm, Document):
def __init__(self):
self.save('Contacts')
This is the result I get when I create an instance of Contacts.
> c = Contacts()
< inside Cdm from Contacts
< inside Document from Cdm
Now this is just weird, possibly to my eye. I might have misunderstood something. As you can see, the class Contacts inherits from cdm and Document. I am trying to use the save method of Cdm from Contacts. But Cdm inherits from object and does not have a super class method called save yet it calls the save function from Document class. In the program what I am working this is the behaviour I want but I am worried as theoretically it should not work or at least I think.
Do you have any comments on this. Or have I misunderstood Python's inheritance.
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正如 Python 文档 所说：
在这种情况下，
super(Cdm,self).save('Cdm')将调用方法解析顺序中的下一个save()版本。在这种情况下，它是Document类中的save()方法，因为它是Cdm的兄弟类（即，它是第二个基类）Contacts类）。可以在这里找到
super()的实用解释：Python 的 super() 被认为是 super！As Python documentation says:
In that situation,
super(Cdm,self).save('Cdm')will call the version ofsave()which is next in method resolution order. In that case it is thesave()method in theDocumentclass because it is a sibling class ofCdm(i.e. it is the second base class ofContacts).A great practical explanation of
super()can be found here: Python’s super() considered super!super(Cdm,self).save('Cdm')调用 mro 中下一个类的save方法。这可能不是当前类的直接父类。有关 super 的工作原理和用途的更多信息，您可以参考 文档 和这篇博文。
super(Cdm,self).save('Cdm')calls thesavemethod of the next class in the mro. This may not be a direct parent of the current class.For more info about how super works and what it can be used for, you can refer to the documentation and this blog post.