#! /usr/bin/env python
#conding=utf-8

import rospy

if __name__ =='__main__':
    #初始化节点
    rospy.init_node('param_set')
    #新增参数
    rospy.set_param('type_p','xiaohuangche')
    rospy.set_param('radius_p',0.15)
    #修改参数
    rospy.set_param('radius_p',0.2)

   #3.get_param_name 
    names=rospy.get_param_names()
    for name in names:
        rospy.loginfo('name=%s',name)

查 

    #4.has_param
    flag1=rospy.has_param('radius_p')
    if flag1:
        rospy.loginfo('radius_p存在')
    else:
        rospy.loginfo('radius_p不存在')

    #5.search_param  查找某个参数的键
    key=rospy.search_param('radius_p')
    rospy.loginfo('key=%s',key)

删除

import rospy

if __name__ =='__main__':
    rospy.init_node('del_param_p')

    try:
        rospy.delete_param('radius_p')
    except Exception as e:
        rospy.loginfo('被删除的参数不存在')