def get_func_name(func):
    """Return a name which includes the module name and function name."""
    func_name = getattr(func, '__name__', func.__class__.__name__)
    module_name = func.__module__
    if module_name is not None:
        module_name = func.__module__
        return '{}.{}'.format(module_name, func_name)
    return func_name
