ros2运行报错

[twj0011001010]

在看4-6-2的时候跟着鱼哥使用ros2 run village_li li4_node命令时，系统报错ImportError: cannot import name 'BorrowMoney' from 'village_interfaces.srv'

据体文件和错误为以下
import rclpy
from rclpy.node import Node
#1.导入消息类型
from std_msgs.msg import String,UInt32
#1.导入服务接口
from village_interfaces.srv import BorrowMoney

class WriterNode(Node):
def init(self,name):
super().init(name)
self.get_logger().info("大家好,我是作家li4%s." % name)
#2.声明并创建发布者
self.pub_novel = self.create_publisher(String,"sexy_girl",10)

    self.count = 0
    self.timer_period=5
    self.timer=self.create_timer(self.timer_period,self.timer_callback)

    self.account = 80
    self.sub_money = self.create_subscription(UInt32,"sexy_girl_money",self.recv_money_callback,10)
    #3.声明并创建服务端
    self.borrow_server = self.create_service(BorrowMoney,"brrow_money",self.borrow_money_callback)

    #2.创建服务端回调函数
def borrow_money_callback(self,request,response):
    pass
    self.get_logger().info("收到来自:%s 的借钱请求,账户目前有:%d" % (request.name,self.account))
    if request.money <= self.account*0.1:
        response.success = True
        response.money = request.money
        self.account = self.account - request.money
        self.get_logger().info("借钱成功,借出%d,目前还剩%d" %(response.money,self.account))
    else:
        response.success = False
        response.money = 0
        self.get_logger.info("对不起,大兄弟,现在手头紧,不能借给你!")
    return response


def timer_callback(self):
   
    msg=String()
    msg.data = "第%d回:淩艳湖 %d 次偶遇胡艳娘" % (self.count,self.count)
    self.pub_novel.publish(msg)  #让发布者发布消息
    self.get_logger().info("发布了一个章节的小说,内容是:%s" % msg.data)
    self.count += 1


def recv_money_callback(self,money):
    
    self.account += money.data
    self.get_logger().info("收到了%d的稿费,现在账户里有%d的钱" % (money.data,self.account))

def main(args=None):
rclpy.init(args=args)
li4_node = WriterNode("li4")
rclpy.spin(li4_node)
rclpy.shutdown()

www@www-virtual-machine:~/town_ws$ ros2 run village_li li4_node
Traceback (most recent call last):
File "/home/www/town_ws/install/village_li/lib/village_li/li4_node", line 33, in <module>
sys.exit(load_entry_point('village-li==0.0.0', 'console_scripts', 'li4_node')())
File "/home/www/town_ws/install/village_li/lib/village_li/li4_node", line 25, in importlib_load_entry_point
return next(matches).load()
File "/usr/lib/python3.10/importlib/metadata/init.py", line 171, in load
module = import_module(match.group('module'))
File "/usr/lib/python3.10/importlib/init.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 1050, in _gcd_import
File "<frozen importlib._bootstrap>", line 1027, in _find_and_load
File "<frozen importlib._bootstrap>", line 1006, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 688, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 883, in exec_module
File "<frozen importlib._bootstrap>", line 241, in _call_with_frames_removed
File "/home/www/town_ws/install/village_li/lib/python3.10/site-packages/village_li/li4.py", line 6, in <module>
from village_interfaces.srv import BorrowMoney
ImportError: cannot import name 'BorrowMoney' from 'village_interfaces.srv' (/home/www/town_ws/install/village_interfaces/local/lib/python3.10/dist-packages/village_interfaces/srv/init.py)
[ros2run]: Process exited with failure 1

[xzz]

检查编译后的install/village_interfaces/local/lib/python3.10/dist-packages/village_interfaces/srv 看看有没有BorrowMoney.py