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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def from_object(self, instance: Union[object, str]) -> None: """Load the configuration from a Python object. This can be used to reference modules or objects within modules for example, .. code-block:: python app.config.from_object('module') app.config.from_object('module.instance') from module import instance app.config.from_object(instance) are valid. Arguments: instance: Either a str referencing a python object or the object itself. """

        if isinstance(instance, str):
            try:
                path, config = instance.rsplit('.', 1)
            except ValueError:
                path = instance
                instance = importlib.import_module(path)
            else:
                module = importlib.import_module(path)
                instance = getattr(module, config)

        for key in dir(instance):
            if key.isupper():
                self[key] = getattr(instance, key)