Cannot use osc

Hello, I tried to install osc by the command

sudo zypper in osc

the packages are installed successfully, however it returned an error when I tried to use osc in the command line
the error is

Traceback (most recent call last):
  File "/usr/bin/osc", line 10, in <module>
    from osc import commandline, babysitter
ModuleNotFoundError: No module named 'osc'

what should I do?

OSC is a python 2.x app so you may need to install python, my guess is you only have python3 installed and /usr/bin/python points to python3.6

python --version

Should be revealing. python-base should install a 2.7 symlink in /usr/bin/

Thanks, it works perfectly after linking python to /usr/bin/python2