Ah it has to be immediately before the command, I did it a few lines before. Cheers - works fine now. sampsa On 26 Jan 2015, at 21:53, Mark Pizzolato - Info Comm <Mark at infocomm.com> wrote: To get the behavior you are expecting when invoked from a command file, the command immediately preceding the python invitation should be: $ define/user sys$input sys$command This is from 20+ year old memory, but that should be close.... - Mark On Jan 26, 2015 2:47 PM, Johnny Billquist <bqt at softjar.se> wrote: On 2015-01-26 20:41, Sampsa Laine wrote: Are you sure it is not EOF? When run from a command file, programs will get their input from the command file, up to the next line starting with a dollar sign, which would be the next DCL command. So I would assume you'd get an EOF in your python program at that point. Johnny