Access instance object attributes from instance.stack()

Question

I'm trying to do something really ugly and need help. From some method, I'm trying to analyze the stack and identify which class called this method as described here. But I want to go one step further and update some attribute of the instance of the class that called my method.

Example:

class A(object):
    self.a

    def some_func():
        analyze()

def analyze():
    frm = inspect.stack()[1]
    obj = find_obj_of_frm_by_magic(frm)
    obj.a = 1

Is that the actual code? Because as is there are a few syntax errors. — idjaw, Oct 06 '15 at 11:25
I'm going to post an answer to see if I am on the right track with what you are looking for. Let me know. — idjaw, Oct 06 '15 at 11:31

score 1 · Accepted Answer · answered Oct 06 '15 at 11:31

I didn't use your "find_obj_of_frm_by_magic" method which I am assuming is the logic in that post you linked. I tried doing this instead, however I explicitly used the class and I was able to modify the instance doing the following.

I used the setattr method to add an attribute to the class. The only difference is that I am using the class explicitly.

class A(object):
    a = ""

    def some_func(self):
        analyze()

def analyze():
    frm = inspect.stack()[1]
    setattr(frm[0].f_globals.get('A'), 'stuff', 'boo')

a = A()
a.some_func()
# will output boo
print(a.stuff)

Access instance object attributes from instance.stack()

1 Answers1