def get_callable_name(func):
    if hasattr(func, '__qualname__'):
        return func.__qualname__

    # get func's  class
    f_self = getattr(func, '__self__', None) or getattr(func, 'im_self', None)
    if f_self and hasattr(func, '__name__'):
        # bound method class
        f_class = f_self if isinstance(f_self, type) else f_self.__calss__
    else:
        # class unbound method
        f_class = getattr(func, 'im_class', None)

    # class methods, bound and unbound methods
    if f_class and hasattr(func, '__name__'):
        return '%s.%s' % (f_class.__name__, func.__name__)

    # class or class instance
    if hasattr(func, '__call__'):
        # class
        if hasattr(func, '__name__'):
            return func.__name_
        # class instance
        return func.__class__.__name__

    raise ValueError('Unable to determine a name for ')