The best way I found to do this was to use a custom dictionary class as explained in this post:  https://stackoverflow.com/a/14620633/8484485 Please refer to this post for pros and cons. (and upvote the original poster!)

If iPython autocompletion support is needed, simply define the dir() function like this:

class AttrDict(dict):
    def __init__(self, *args, **kwargs):
        super(AttrDict, self).__init__(*args, **kwargs)
        self.__dict__ = self
    def __dir__(self):
        return self.keys()

You then define your pseudo struct like so: (this one is nested)

my_struct=AttrDict ({
    'com1':AttrDict ({
        'inst':[0x05],
        'numbytes':2,
        'canpayload':False,
        'payload':None
    })
})

You can then access the values inside my_struct like this:

print(my_struct.com1.inst)

=>[5]

The best way I found to do this was to use a custom dictionary class as explained in this post:  https://stackoverflow.com/a/14620633/8484485

If iPython autocompletion support is needed, simply define the dir() function like this:

class AttrDict(dict):
    def __init__(self, *args, **kwargs):
        super(AttrDict, self).__init__(*args, **kwargs)
        self.__dict__ = self
    def __dir__(self):
        return self.keys()

You then define your pseudo struct like so: (this one is nested)

my_struct=AttrDict ({
    'com1':AttrDict ({
        'inst':[0x05],
        'numbytes':2,
        'canpayload':False,
        'payload':None
    })
})

You can then access the values inside my_struct like this:

print(my_struct.com1.inst)

=>[5]