Function _unbind_method

IPython/core/guarded_eval.py:68–86

Get unbound method for given bound method. Returns None if cannot get unbound method, or method is already unbound.

(func: Callable)

def _unbind_method(func: Callable) -> Union[Callable, None]:
    """Get unbound method for given bound method.

    Returns None if cannot get unbound method, or method is already unbound.
    """
    owner = getattr(func, "__self__", None)
    owner_class = type(owner)
    name = getattr(func, "__name__", None)
    instance_dict_overrides = getattr(owner, "__dict__", None)
    if (
        owner is not None
        and name
        and (
            not instance_dict_overrides
            or (instance_dict_overrides and name not in instance_dict_overrides)
        )
    ):
        return getattr(owner_class, name)
    return None


@undoc