https://www.bilibili.com/video/BV1zt411G7Vn?p=10&spm_id_from=pageDriver
rosrun learning_topic velocity_publisher.py
给的错误反馈是:
Traceback (most recent call last):
File "/home/wxx/catkin_ws/devel/lib/learning_topic/velocity_publisher.py", line 10, in <module>
import rospy
File "/opt/ros/noetic/lib/python3/dist-packages/rospy/__init__.py", line 47, in <module>
from std_msgs.msg import Header
File "/opt/ros/noetic/lib/python3/dist-packages/std_msgs/msg/__init__.py", line 1, in <module>
from ._Bool import *
File "/opt/ros/noetic/lib/python3/dist-packages/std_msgs/msg/_Bool.py", line 6, in <module>
import genpy
File "/opt/ros/noetic/lib/python3/dist-packages/genpy/__init__.py", line 34, in <module>
from . message import Message, SerializationError, DeserializationError, MessageException, struct_I
File "/opt/ros/noetic/lib/python3/dist-packages/genpy/message.py", line 48, in <module>
import yaml
ImportError: No module named yaml
求大佬解答
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