how can I run python number of 10 programs simultaneously? : I have `a_1.py`~`a_10.py`

I want to run parallel 10 python program

I tried
```
from multiprocessing import Process
import os

def info(title):
    I want to execute python program

def f(name):
    for i in range(10):
        info('a_'+str(i)+'.py')


if __name__ == '__main__':
    info('main line')
    p = Process(target=f)
    p.start()
    p.join()
```

but it doesn't work

how to I solve this?