# How to get a single object or some in paraview python?

**URL:** https://discourse.paraview.org/t/how-to-get-a-single-object-or-some-in-paraview-python/6715
**Category:** ParaView Support
**Tags:** python
**Created:** [March 16, 2021, 1:01pm UTC](https://discourse.paraview.org/t/how-to-get-a-single-object-or-some-in-paraview-python/6715 "2021-03-16T13:01:47Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![jone](https://discourse.paraview.org/user_avatar/discourse.paraview.org/jone/32/9307_2.png) [@jone](https://discourse.paraview.org/u/jone)
#### Post date: [March 16, 2021, 1:01pm UTC](https://discourse.paraview.org/t/how-to-get-a-single-object-or-some-in-paraview-python/6715/1 "2021-03-16T13:01:47Z")

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I rendered some data on the server side in python, like this:

> ```
> > reader = simple.OpenDataFile('xxx.obj')
> > simple.Show(reader)
> > simple.Render()
> 
> ```

And I want to customize some protocols such as pick or clip one of the objects I rendered. I tried some methods, but it didn’t have the right effect. Do the experts have any good advice? Thank you in advance!

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<div class="post-metadata">

### Author: ![jourdain](https://discourse.paraview.org/user_avatar/discourse.paraview.org/jourdain/32/11_2.png) [@jourdain](https://discourse.paraview.org/u/jourdain)
#### Post date: [March 16, 2021, 3:58pm UTC](https://discourse.paraview.org/t/how-to-get-a-single-object-or-some-in-paraview-python/6715/2 "2021-03-16T15:58:50Z")

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You can use the **trace** in ParaView to learn how your UI interaction translate into Python commands.