Making a class discoverable for api server

Question

I have set of tasks directory which has multiple tasks file like task1.py, task2.py every task has different class say Task1 in task1.py and bunch of other dependent class, imports and this directory has some other files as well.

I want to create a mapping of this filename and the class object at runtime. What are the options do I have.

Adding base code

task_dict = {} # filename: task_object
def get_class_name():
    # Here I will do walk through tasks directory and 
    # find all the files that has task defined in it
    # and create a mapping which is like
    # {"task1": Task1, "task2": Task2}

task1.py will look like

import statements

Class Task1(CanInheritSomething):
    # some Code

class BunchOfOtherClass:
    pass

def some_random_method:
    pass

It's same for task2.

My question is what type of identification can be used to import Task1 class at runtime. I am still designing it so I am open with options