Python XX 实例没有属性 YY

Question

我有这个菜鸟错误，

   l = instanciaHagale.multiplicaMethod() AttributeError: Hagale instance has no attribute 'multiplicaMethod'

这里是我的代码:

class Hagale :
    def __init__(self, a):
        self.a = a 
        print self.a 

        self.sumaleAlgo = self.a+34543 #variable creada on the fly!

        def multiplicaMethod (self):

            return 'self.cuadradoReal'
            #self.cuadradoReal = self.a * 2

instanciaHagale = Hagale(345)

print instanciaHagale.sumaleAlgo #acceso a las variables de mi objeto! 

l = instanciaHagale.multiplicaMethod()

print l 

Answer 1

    def __init__(self, a):
        # ...

        def multiplicaMethod (self):

最后一个 def 缩进错误。缩小它，使其与 def __init__(self, a): 处于同一级别，如下所示:

class Hagale(object):
    def __init__(self, a):
        self.a = a 
        print self.a 
        self.sumaleAlgo = self.a+34543 #variable creada on the fly!

    def multiplicaMethod (self): # <-- moved to the left
        return 'self.cuadradoReal'

另请注意，您的代码使用了 classic classes .这可能不是您想要的，但它很容易解决 - 只需继承 object。