how to get python print result in jenkins console output

Any output to stdout from a process spawned by Jenkins should be captured by Console Output. One caveat is that it won't be displayed until a newline character is printed, so make sure your lines are terminated.

If you are launching python in some weird way that dis-associates it from Jenkins parent process, then I can't help you.

Try using -u (unbuffered) option when running the python script.