运行rosrun rosserial_python serial_node.py /dev/ttyUSB0时触发递归深度超限错误

我尝试通过rosserial与ESP32建立通信，执行命令rosrun rosserial_python serial_node.py /dev/ttyUSB0时，持续触发递归错误，具体报错信息如下：

File "/home/tilak/catkin_ws/devel/lib/rosserial_python/serial_node.py", line 15, in <module>
    exec(compile(fh.read(), python_script, 'exec'), context)
  File "/home/tilak/catkin_ws/devel/lib/rosserial_python/serial_node.py", line 15, in <module>
    exec(compile(fh.read(), python_script, 'exec'), context)
  File "/home/tilak/catkin_ws/devel/lib/rosserial_python/serial_node.py", line 15, in <module>
    exec(compile(fh.read(), python_script, 'exec'), context)
  File "/home/tilak/catkin_ws/devel/lib/rosserial_python/serial_node.py", line 15, in <module>
    exec(compile(fh.read(), python_script, 'exec'), context)
  File "/home/tilak/catkin_ws/devel/lib/rosserial_python/serial_node.py", line 7, in <module>
    with open(python_script, 'r') as fh:
RecursionError: maximum recursion depth exceeded while calling a Python object
tilak@tilak-Lenovo-ideapad-330S-14IKB:~$ rosrun rosserial_python serial_node.py /dev/ttyUSB0 

解决步骤 #

• 重新编译工作空间，清除编译缓存问题：

  cd ~/catkin_ws
  rm -rf devel build
  catkin_make
  source devel/setup.bash
  

• 重新安装rosserial_python包，修复可能损坏的文件：

  sudo apt-get install --reinstall ros-noetic-rosserial-python
  

• 直接调用系统安装的源文件，避开devel目录下出错的生成脚本：

  rosrun rosserial_python /opt/ros/noetic/lib/rosserial_python/serial_node.py /dev/ttyUSB0
  

• 配置串口访问权限，将当前用户加入dialout组：

  sudo usermod -aG dialout $USER
  

  执行后注销并重新登录，权限才可生效。

内容的提问来源于stack exchange，提问作者Tilak Kuntalkumar Kamani