摘要：
talker.py ubuntu18.04 + ros melodic + cv2 #!/usr/bin/env python3 # coding:utf-8 import cv2 import numpy as np import rospy from std_msgs.msg import He 阅读全文
摘要：
rosdep init 报错示例： RROR: cannot download default sources list from: https://raw.githubusercontent.com/ros/rosdistro/master/rosdep/sources.list.d/20-def 阅读全文