# Operations duplicated when running python script
**URL:** https://discourse.paraview.org/t/operations-duplicated-when-running-python-script/11361
**Category:** ParaView Support
**Created:** [February 9, 2023, 7:19am UTC](https://discourse.paraview.org/t/operations-duplicated-when-running-python-script/11361 "2023-02-09T07:19:05Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@Frankx9](https://discourse.paraview.org/u/Frankx9)
#### Post date: [February 9, 2023, 7:19am UTC](https://discourse.paraview.org/t/operations-duplicated-when-running-python-script/11361/1 "2023-02-09T07:19:05Z")
Hi,
I’ve written a python script to do basic post-processing (i.e. extracting a surface) via the tracing method. When I run it I have no problems and the surface gets extracted correctly (i.e. `clip2` in this case) but when I try to unhide `clip2` all the operations in the pipeline are repeated (`Clip` - `CleantoGrid1` - `ExtractSurface1` - `Clip2` ) and given that the `CleantoGrid1` procedure is very slow in my case, I want to avoid this. How I can accomplish that (i.e. creating `Clip2` and when unhiding it I don’t want ParaView to do all the previous filters in the pipeline again - (`Clip` - `CleantoGrid1` - `ExtractSurface1` - `Clip2` )
Regards
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### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [February 9, 2023, 8:10am UTC](https://discourse.paraview.org/t/operations-duplicated-when-running-python-script/11361/2 "2023-02-09T08:10:58Z")
Hi @Frankx9
Could you share your script ?
Best,
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### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [February 9, 2023, 12:38pm UTC](https://discourse.paraview.org/t/operations-duplicated-when-running-python-script/11361/4 "2023-02-09T12:38:53Z")
I’m unable to reproduce, please provide precise steps to reproduce.