# ArrowGlyphFilter from Python Shell in PV 6.0.0

**URL:** https://discourse.paraview.org/t/arrowglyphfilter-from-python-shell-in-pv-6-0-0/16915
**Category:** ParaView Support
**Created:** [July 9, 2025, 7:51am UTC](https://discourse.paraview.org/t/arrowglyphfilter-from-python-shell-in-pv-6-0-0/16915 "2025-07-09T07:51:28Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![Venke](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/v/6de8d8/32.png) [@Venke](https://discourse.paraview.org/u/Venke)
#### Post date: [July 9, 2025, 7:51am UTC](https://discourse.paraview.org/t/arrowglyphfilter-from-python-shell-in-pv-6-0-0/16915/1 "2025-07-09T07:51:28Z")

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Hi,  
I get an error when I want to use the ArrowGlyphFilter in the Python Shell in ParaView 6.0.0:

```auto
Traceback (most recent call last):
  File "<console>", line 1, in <module>
NameError: name 'ArrowGlyphFilter' is not defined

```

The plugin is loaded and I use the same command that is shown in the trace. I have used the phython-code before in PV 5.12 without errors. What am I missing (or is it a bug)?

[import\_invapts.xyz](https://discourse.paraview.org/uploads/short-url/1OJMCalrqOLE7QpXNtNnWS2gKxY.xyz) (1.2 KB)  
I am including the data I am using in this post, if anybody wants to test my code with it. Here is the code I use up to the error:

```auto
import re
myfile = VisItXYZReader(FileName='C:/path_to_datafile/import_invapts.xyz')
myfile.Meshes = ['mesh']
myfile.PointArrays.SelectAll()
rv1 = GetActiveViewOrCreate('RenderView')
Disp = Show(myfile, rv1,'GeometryRepresentation')
calc = Calculator(registrationName='calc',Input=myfile)
calc.Function = '(var0-coordsX)*iHat+(var1-coordsY)*jHat+(var2-coordsZ)*kHat'
calc2 = Calculator(registrationName='calc2',Input=calc)
calc2.Function = '1/sqrt(Result_X^2+Result_Y^2+Result_Z^2)'
calc2.ResultArrayName = 'Invscale'
glyphstr='Arrow/0.1/0.35/10/0.03/10'
glyphprops=list(map(str,glyphstr.split('/')))
arrowGlyphFilter1 = ArrowGlyphFilter(registrationName='ArrowGlyphFilter1', Input=calc2)

```

Cheers,  
Venke

---

<div class="post-metadata">

### Author: ![cory.quammen](https://discourse.paraview.org/user_avatar/discourse.paraview.org/cory.quammen/32/11193_2.png) [@cory.quammen](https://discourse.paraview.org/u/cory.quammen)
#### Post date: [July 9, 2025, 2:11pm UTC](https://discourse.paraview.org/t/arrowglyphfilter-from-python-shell-in-pv-6-0-0/16915/2 "2025-07-09T14:11:45Z")

</div>

It seems like this is a function of event ordering.

This works:

- Tools → Manage Plugins… Load the ArrowGlyph plugin.
- View → Python Shell. Click in it.
- Write ArrowGlyphFilter, the symbol will be available.

However, if you click in the Python Shell _before_ loading the plugin, Python initialization and the `from paraview.simple import *` will be executed, and the `ArrowGlyphFilter` will not have been imported from the `paraview.simple` namespace because it isn’t yet in `paraview.simple` when the initial import occurs. Therefore, always load the plugin before you access the Python Shell to access `ArrowGlyphFilter`. You can make it an Auto Load plugin in the _Plugin Manager_ to avoid having to load it manually each time.

Lastly, you can always access the filter after the plugin has been loaded with its full name, `paraview.simple.ArrowGlyphFilter`.