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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 get(self, obj, **kwargs):
 """Get an attribute from a value. :param obj: Object to get the attribute value from. :return: Value of object's attribute. """

        assert self.getter is not None, "Getter accessor is not specified."
        if callable(self.getter):
            return self.getter(obj, **_get_context(self._getter_argspec, kwargs))

        assert isinstance(self.getter, string_types), "Accessor must be a function or a dot-separated string."

        for attr in self.getter.split("."):
            if isinstance(obj, dict):
                obj = obj[attr]
            else:
                obj = getattr(obj, attr)

        if callable(obj):
            return obj()

        return obj