<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def verify_deprecated_policy(old_policy, new_policy, default_rule, context):
 """Check the rule of the deprecated policy action If the current rule of the deprecated policy action is set to a non-default value, then a warning message is logged stating that the new policy action should be used to dictate permissions as the old policy action is being deprecated. :param old_policy: policy action that is being deprecated :param new_policy: policy action that is replacing old_policy :param default_rule: the old_policy action default rule value :param context: the monasca context """


    if _ENFORCER:
        current_rule = str(_ENFORCER.rules[old_policy])
    else:
        current_rule = None

    if current_rule != default_rule:
        LOG.warning("Start using the new action '{0}'. The existing "
                    "action '{1}' is being deprecated and will be "
                    "removed in future release.".format(new_policy,
                                                        old_policy))
        target = {'project_id': context.project_id,
                  'user_id': context.user_id}

        return authorize(context=context, action=old_policy, target=target)
    else:
        return False