点云学习笔记14——ModuleNotFoundError: No module named ‘rospy

ModuleNotFoundError: No module named ‘rospkg’

pip3 install catkin-tools rospkg pyyaml empy numpy
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ModuleNotFoundError: No module named 'rospy

echo "source /opt/ros/melodic/setup.bash" >> ~/.bashrc
source ~/.bashrc
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