Attention: Answers.ros.org is deprecated as of August the 11th, 2023. Please visit robotics.stackexchange.com to ask a new question. This site will remain online in read-only mode during the transition and into the foreseeable future. Selected questions and answers have been migrated, and redirects have been put in place to direct users to the corresponding questions on Robotics Stack Exchange. Additional details are available here.

Revision history [back]

I found out the reason. Because i installed 'conda', the bad guy change the env path of python. The sys cannot access the package. I delete it and make the pkg work. Thank you very much. In fact, I meet a even sever problem now. I will post it tomorrow since it is too late now. Here is mid-night,hah

ROS Answers is licensed under Creative Commons Attribution 3.0 Content on this site is licensed under a Creative Commons Attribution Share Alike 3.0 license.