将类的实例名称保存在字符串变量中

Question

I have this strange question that im stuck for days. I'm developing a small program using python for maya. (By now I hope you know I'm not a professional programmer. just a side coder to build some internal scripts and tools)

The tool I am building has a lot of UI elements I am creating as classes, which have their own methods.

What I need to do, is to pass an instance of such a class, using a string. I know this is strange and pls let me explain.

I need to implement a drag and drop operation of a widget class, which can pass a message from the source to the destination. the message always gets forcefully (by Maya) gets converted into a string!!!

Class a(object):
    def __init__(self, v)
        self.v=v

instance=a("important")

normally what I can do is

print (instance.v)

but what happens is during the message exchange process, the instance gets converted to text and I get a string instead of the python object

'< main .a object at 0x000001BB0696CA90>'

which is a string,. and i can't run or query any methods in the actual function..

I know this is very noob. Please advice on how I can convert a class instance saved in a string to a python object so I can call up its methods or query variables..

Thanks again.

Answer 1

How about writing a method for your class which returns the string?

class A(object):
    def __init__(self, v):
        self.v = v

    def getV(self):
        return self.v

Result:

>>> Instance = A('important')
>>> print(Instance.getV())
important
>>> Instance.getV()
'important'

If that doesn't work maybe you could write a printV() method...

Answer 2

Well.. pickeling worked!! i just wanted a way of creating a string from an instance and using the string to make the reference to the instance again.!! thanks, @kiran Baktha!

i just did

beforetransfer = pickel.dumps(instance)

and at the recieving end

aftertransfer = pickel.loads(beforetransfer)

thanks community!! you guys are amazzing!!