Problem with epython examples

[RoronoaZ]

Hi everyone, actually right now i'm getting familiar with parallella board and parallel programming. So I chose to start with this python interpreter to learn how can i distribute tasks and run them in a parallel way.
I was trying epython built examples (ex: hello.py) where each core should print hello world but unfortunately it didn't print out anything. when I type epython hello.py and hit Enter it just go to the next line, there is no error at all, I've tried the other examples and it still the same.
For epiphany cores, I tried other C codes for printing hello world and it works.
The epython installed on my board is updated.

I appreciate any replies
Thank you.