ubuntu 20.04 安装 ROS noetic,catkin_make报错python版本不一致,处理办法

详细错误信息如下:

ImportError: "from catkin_pkg.package import parse_package" failed: No module named 'catkin_pkg'
Make sure that you have installed "catkin_pkg", it is up to date and on the PYTHONPATH.
CMake Error at /opt/ros/noetic/share/catkin/cmake/safe_execute_process.cmake:11 (message):
  execute_process(/home/wuming/anaconda3/bin/python3
  "/opt/ros/noetic/share/catkin/cmake/parse_package_xml.py"
  "/opt/ros/noetic/share/catkin/cmake/../package.xml"
  "/home/wuming/catkin_ws/build/catkin/catkin_generated/version/package.cmake")
  returned error code 1
Call Stack (most recent call first):
  /opt/ros/noetic/share/catkin/cmake/catkin_package_xml.cmake:74 (safe_execute_process)
  /opt/ros/noetic/share/catkin/cmake/all.cmake:168 (_catkin_package_xml)
  /opt/ros/noetic/share/catkin/cmake/catkinConfig.cmake:20 (include)
  CMakeLists.txt:58 (find_package)


-- Configuring incomplete, errors occurred!
See also "/home/wuming/catkin_ws/build/CMakeFiles/CMakeOutput.log".
See also "/home/wuming/catkin_ws/build/CMakeFiles/CMakeError.log".
Invoking "cmake" failed

问题原因:主要是ROS的python版本和机器自身python版本不兼容(我的ubuntu使用的是 python 3.8.5)

解决办法:根据官网说明使用  

catkin_make -DPYTHON_EXECUTABLE=/usr/bin/python3

解决问题

官网地址:http://wiki.ros.org/catkin/Tutorials/create_a_workspace

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