Oh yes. I completely forgot about that.
In PRPCd you need to enable 'Remote python script execution'.
Then you can send python scripts to PRPCd and it will execute them.
It will prompt you for confirmation if the 'with confirmation' box is checked.

Thank you Dizzi for adding that to AL.

P3dO also has a 'Run Python Script' option in the 'Tools' menu.
But you need to enable it first.

You need to enable this in Tools->Options->PlugIns->PoserPython
activate the 'Extended' checkbox, click 'Ok' then restart P3dO.

Then P3dO will have the 'Run Python Script' option avaliable in the 'Tools' menu.

You can also use 'Windows Explorer' if you installed 'snd2sock'.exe  to create the 'Send To' right-click context menu.