python – ImportError：没有名为catkin_pkg.packages的模块

概述我想跑： – roslaunch turtlebot_gazebo turtlebot_world.launch 但我得到以下错误 Traceback (most recent call last): File "/opt/ros/kinetic/share/xacro/xacro.py", line 55, in <module> import xacro File "/opt/ 我想跑： –
roslaunch turtlebot_gazebo turtlebot_world.launch

但我得到以下错误

Traceback (most recent call last):  file "/opt/ros/kinetic/share/xacro/xacro.py",line 55,in <module>    import xacro  file "/opt/ros/kinetic/lib/python2.7/dist-packages/xacro/__init__.py",line 42,in <module>    from roslaunch import substitution_args  file "/opt/ros/kinetic/lib/python2.7/dist-packages/roslaunch/__init__.py",line 56,in <module>    from .launch import ROSLaunchRunner  file "/opt/ros/kinetic/lib/python2.7/dist-packages/roslaunch/launch.py",in <module>    from roslaunch.nodeprocess import create_master_process,create_node_process  file "/opt/ros/kinetic/lib/python2.7/dist-packages/roslaunch/nodeprocess.py",line 49,in <module>    from roslaunch.node_args import create_local_process_args  file "/opt/ros/kinetic/lib/python2.7/dist-packages/roslaunch/node_args.py",line 53,in <module>    import roslib.packages  file "/opt/ros/kinetic/lib/python2.7/dist-packages/roslib/__init__.py",line 54,in <module>    import roslib.stacks  file "/opt/ros/kinetic/lib/python2.7/dist-packages/roslib/stacks.py",line 46,in <module>    import roslib.packages  file "/opt/ros/kinetic/lib/python2.7/dist-packages/roslib/packages.py",in <module>    from catkin.find_in_workspaces import find_in_workspaces as catkin_find  file "/opt/ros/kinetic/lib/python2.7/dist-packages/catkin/find_in_workspaces.py",line 36,in <module>from catkin_pkg.packages import find_packagesimportError: No module named catkin_pkg.packageswhile processing /opt/ros/kinetic/share/turtlebot_gazebo/launch/includes/kobuki.launch.xml:InvalID <param> tag: Cannot load command parameter [robot_description]: command [/opt/ros/kinetic/share/xacro/xacro.py '/opt/ros/kinetic/share/turtlebot_description/robots/kobuki_hexagons_asus_xtion_pro.urdf.xacro'] returned with code [1].

解决方法 这对我有用

pip install catkin_pkg

总结

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