---
title: "Python commands for use with Nexus"
canonical: "https://help.vicon.com/space/Nexus218/406489536/Python%20commands%20for%20use%20with%20Nexus"
format: markdown
---
The following information is provided to help you to get started using Python for modeling with Nexus.

Before you begin, ensure you have launched and configured Python as described in [Set up Python for use with Nexus](https://vicon-help.atlassian.net/wiki/spaces/Nexus218/pages/406489511).

> ✅ **Tip**   
> ✅ Remember to import the module first:   
> ✅ `import ViconNexus`

## Display all Nexus Python SDK commands

At the Python command prompt, assuming you have completed the above preparatory step, enter:

`dir(ViconNexus.ViconNexus)`

A list of all Nexus Python SDK commands is displayed:

> ![image](media://31aa947f-87d7-498e-a666-d2a9e232b05c)

> Macro (scroll-pagebreak)

## Display help on a command

To display help on one of the commands listed above:

At the Python command prompt, enter:

`help(commandName)`

Where *commandName* is the command for which you want to display help.

For example, to display help about **GetTrajectory**, enter:

`help(ViconNexus.ViconNexus.GetTrajectory)`

> ![image](media://a261d882-2516-4110-8539-5748a852e4f2)