python 继承函数在 init 期间重写

Question

Father 类可以以某种方式看到 Child 类的方法。我推测在 init 期间，Father 只能使用内部方法

但显然我错了。这是代码:

class Father():
    def __init__(self):
        self.name=self.getName()
        print "from Father ->", self.name

    def getName(self):
        return "father"

class Child(Father):
    def __init__(self):         
        Father.__init__(self)
        self.name=self.getName()
        print "from Child ->", self.name

    def getName(self):
        return "child"

if __name__ == "__main__":
    import sys, pprint

    someone=Child()

输出是

from Father -> child
from Child -> child

但我想得到

from Father -> father
from Child -> child

有什么想法如何重写它吗？ Tnx!

Answer 1

这就是 name-mangling 的目的:它允许你说:“这个类的属性”:

class Father():
    def __init__(self):
        self.name=self.__getName()
        print "from Father ->", self.name
    def __getName(self):
        return "father"

class Child(Father):
    def __init__(self):         
        Father.__init__(self)
        self.name=self.__getName()
        print "from Child ->", self.name

    def __getName(self):
        return "child"

if __name__ == "__main__":
    import sys, pprint

    someone=Child()

产量

from Father -> father
from Child -> child

有关更多信息，另请参阅this post .