对于 15.4，请以根用户 root 运行下面命令：
zypper addrepo https://download.opensuse.org/repositories/home:neotinker3:ROS:ROS1:noetic:external_dependencies/15.4/home:neotinker3:ROS:ROS1:noetic:external_dependencies.repo
zypper refresh
zypper install python-pycryptodomex
对于 15.3，请以根用户 root 运行下面命令：
zypper addrepo https://download.opensuse.org/repositories/home:neotinker3:ROS:ROS1:noetic:external_dependencies/15.3/home:neotinker3:ROS:ROS1:noetic:external_dependencies.repo
zypper refresh
zypper install python-pycryptodomex