Convert String to Object name

Question

I needed help on this one. How do I convert a string into a variable/object/instance name, since I don't know how to categorize this.
Assuming my code is:

a = {}
b = {}

class Test:
    def getKeys(self, var):
        return var.keys() #where var refers to the dictionary and its a string initially

Answer 1

It's been forever since I've done anything with Python but I do remember having this problem once. I suggest you look into the eval() function.