创建可访问每一层变量的多层Python类

Question

In Python 2.7, I'm trying to create classes within classes (and so on), like for example:

class Test(object):

    def __init__(self, device_name):
        self.device_name = device_name

    class Profile(object):
        def __init__(self, x1, x2):
            self.x1 = x1
            self.x2 = x2

    class Measurement(object):
        def __init__(self, x1, x2):
            self.x1 = x1
            self.x2 = x2    

Using this layering to create objects, I need to be able to assign and access any variable in any layer, like for example:

test1 = Test("Device_1")
Test.Profile(test1, 10, 20)
Test.Measurement(test1, 5, 6)

print test1.Profile.x1
print test1.Measurement.x1 

It should also be noted that I need to load the classes with data taken from a text file.

I thought that using classes would be the best way of achieving this but I'd be happy to hear any other ideas.

Answer 1

My version/solution class scopes :

class Test(object):

    def __init__(self, device_name):
        self.device_name = device_name

    class Profile(object):
        def __init__(self, x1, x2):
            self.x1 = x1
            self.x2 = x2

    class Measurement(object):
        def __init__(self, x1, x2):
            self.x1 = x1
            self.x2 = x2

test1 = Test("Device_1")
prof = test1.Profile(10, 20)
meas= test1.Measurement(5, 6)

print (prof.x1)
print (meas.x1) 

>>> 10
>>> 5

Answer 2

Though I don't know why you want nested classes, this will do exactly as you want. If you look at the example, be sure to note the change in syntax.

class Test(object):
    class Profile(object):
        def __init__(self, x1, x2):
            self.x1 = x1
            self.x2 = x2

    class Measurement(object):
        def __init__(self, x1, x2):
            self.x1 = x1
            self.x2 = x2

    def __init__(self, device_name):
        self.device_name = device_name
        self.profile = None
        self.measurement = None

    def make_profile(self, a, b):
        self.profile = self.Profile(a, b)

    def make_measurement(self, a, b):
        self.measurement = self.Measurement(a, b)

test1 = Test("Device_1")
test1.make_profile(10, 20)
test1.make_measurement(5, 6)

print (test1.profile.x1)
print (test1.measurement.x1)

Output:

10
5