# Installing Python on an OpenVMS Computer

To use Python SDK to run CommCell operations, you must install the Python software on the OpenVMS computer.

## Prerequisites

The OpenVMS computer must have operating system VSI OpenVMS Version 8.4-1H1 I64 or higher.

## Procedure

1. Python requires VSI OpenVMS SSL 1.1.1 package to be installed on the computer.

2. Install Python on the OpenVMS system using the binaries and instructions at Python — VMS Software, Inc.

3. Run the following command to test Python installation.

       python --version

4. Install the Python modules for SSL support:

       python –m pip install pyOpenSSL

## Result

The Python software is installed on the OpenVMS computer along with the dependent packages.

## What to Do Next

Install the Python SDK on the OpenVMS computer:

1. Install the Developer SDK - Python package on the Linux proxy computer. See Preinstallation Checklist for Developer SDK - Python on UNIX.

2. When the Python SDK installation is complete, the installation program creates the Software_Installation_Directory/pythonsdk directory on the proxy computer.

3. Run the following commands on the Linux Proxy to transfer the pythonsdk folder to the OpenVMS computer:

       cd {Software_Installation_Directory}

       sftp system@{OpenVMS_computer_hostname}:/{system-disk-name}/000000

   - At the Password prompt, enter the system user password

   - At the sftp> prompt, type

         put –r pythonsdk

   - Once transfer is complete, at the sftp> prompt, type

         exit

4. Log in to the OpenVMS computer as the system user and run the following commands:

       set def {system-disk-name}:[PYTHONSDK]

       python setup.py install

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