get a Python class from a class name

class_from_name.py

import importlib

def class_from_name(name):
    """
    Take a class name like `django.db.models.Model` and return the class
    """
    parts = name.split('.')
    mod = importlib.import_module('.'.join(parts[:-1]))
    return getattr(mod, parts[-1])

Because I was searching quite long for a solution.