topic Re: Python and OpenVMS in Operating System - OpenVMS

Python and OpenVMS

George Javier — Mon, 08 Sep 2008 17:15:48 GMT

I have a Python script that is UNIX/LINUX centric. In short, it creates a module to connect to an Oracle Database. However, it does not translate directory-type logicals in the VMS fashion (ex. disk1:[oracle_home] vs. /disk1/oracle_home/). It is looking for a UNIX style directory structure. Is there a way to make a local session "think" in this UNIX/LINUX fashion? If more of an explanation is needed, please let me know. Thanks

Re: Python and OpenVMS

Hoff — Mon, 08 Sep 2008 17:48:21 GMT

The C run-time library that's underneath most of these environments allows direct access to Unix-format file specifications on OpenVMS; did you try /disk1/oracle_home under Python?

Otherwise, please post up the Python kit identity and the OpenVMS versions and architecture, and a short example reproducer of what you're trying to do here.

Re: Python and OpenVMS

George Javier — Mon, 08 Sep 2008 20:18:32 GMT

Thanks.. This may have solved my issue. I am waiting for a C compiler to be placed on our system to see if the module truly compiles correctly...

Re: Python and OpenVMS

Jean-François Piéronne — Tue, 09 Sep 2008 04:53:03 GMT

Python on OpenVMS use Unix style filename, this allow to port more easily Unix application on OpenVMS.
But it also provide routines to convert filename from one environment to the other:

$ python
Python 2.5.2 (r252:60911, Aug 2 2008, 10:38:44) [DECC] on OpenVMS
Type "help", "copyright", "credits" or "license" for more information.
>>> import vms.crtl
>>> print vms.crtl.to_vms.__doc__
to_vms(name) -> vms_name

Converts UNIX style file specifications to OpenVMS file specifications.
>>> print vms.crtl.from_vms.__doc__
from_vms(name) -> unix_name

Converts OpenVMS style file specifications to Unix file specifications.
>>>

JF