ImportError: No module named getch

[JiangXiuXiang]

Hi, thanks for your work , I have some problem when I use this.

after installing rosshow by bash script "ros-install-this", I run "rosshow" in terminal, but there is sth wrong :

Traceback (most recent call last):
File "/opt/ros/melodic/bin/rosshow", line 11, in
load_entry_point('rosshow==2.0.1', 'console_scripts', 'rosshow')()
File "/usr/lib/python2.7/dist-packages/pkg_resources/init.py", line 480, in load_entry_point
return get_distribution(dist).load_entry_point(group, name)
File "/usr/lib/python2.7/dist-packages/pkg_resources/init.py", line 2693, in load_entry_point
return ep.load()
File "/usr/lib/python2.7/dist-packages/pkg_resources/init.py", line 2324, in load
return self.resolve()
File "/usr/lib/python2.7/dist-packages/pkg_resources/init.py", line 2330, in resolve
module = import(self.module_name, fromlist=['name'], level=0)
File "/opt/ros/melodic/lib/python2.7/dist-packages/rosshow/rosshow.py", line 17, in
from rosshow.getch import Getch
ImportError: No module named getch

I have try to change the system variable PYTHONPATH , like "export PYTHONPATH=$PYTHONPATH:/opt/ros/melodic/lib/python2.7/dist-packages:/opt/ros/melodic/lib/python2.7/dist-packages/rosshow
",but it does't work.