# Paraview 'numpy' module \[SOLVED\]

**URL:** https://discourse.paraview.org/t/paraview-numpy-module-solved/15003
**Category:** ParaView Support
**Tags:** python
**Created:** [July 8, 2024, 9:03am UTC](https://discourse.paraview.org/t/paraview-numpy-module-solved/15003 "2024-07-08T09:03:05Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![Il\_Briga](https://discourse.paraview.org/user_avatar/discourse.paraview.org/il_briga/32/14763_2.png) [@Il\_Briga](https://discourse.paraview.org/u/Il_Briga)
#### Post date: [July 8, 2024, 9:03am UTC](https://discourse.paraview.org/t/paraview-numpy-module-solved/15003/1 "2024-07-08T09:03:05Z")

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Hi there, very silly question here but no solutions have been found. I’ve installed OpenFoam following this [guide](https://openfoam.org/download/10-linux/) and everything runs fine.

However i cannot use the ‘Python Calculator’ since if i launch the simple command `arctan2(points[:,2], points[:,0])` i get the following error: `I/O : uncollated Traceback (most recent call last): File "<string>", line 2, in <module> File "/opt/paraviewopenfoam56/lib/python2.7/site-packages/paraview/calculator.py", line 9, in <module> raise RuntimeError ("'numpy' module is not found. numpy is needed for "\ RuntimeError: 'numpy' module is not found. numpy is needed for this functionality to work. Please install numpy and try again. `  
My machine runs _Debian 11_, _python3-numpy_ is correctly installed and my paraView version is: _5.6.0_.

Every kind of help is really appreciate!

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### Author: ![mwestphal](https://discourse.paraview.org/user_avatar/discourse.paraview.org/mwestphal/32/17_2.png) [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [July 8, 2024, 9:04am UTC](https://discourse.paraview.org/t/paraview-numpy-module-solved/15003/2 "2024-07-08T09:04:22Z")

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> [@Il\_Briga](#):
>
> my paraView version is: _5.6.0_.

Use ParaView 5.12.0 from [https://www.paraview.org/download/](https://www.paraview.org/download/)

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### Author: ![Il\_Briga](https://discourse.paraview.org/user_avatar/discourse.paraview.org/il_briga/32/14763_2.png) [@Il\_Briga](https://discourse.paraview.org/u/Il_Briga)
#### Post date: [July 8, 2024, 9:05am UTC](https://discourse.paraview.org/t/paraview-numpy-module-solved/15003/3 "2024-07-08T09:05:40Z")

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It works like a charm.

have a great day Mathieu!