# How to delete a \`vtkUnstructuredGrid\`
**URL:** https://discourse.paraview.org/t/how-to-delete-a-vtkunstructuredgrid/13398
**Category:** ParaView Support
**Created:** [November 30, 2023, 11:02am UTC](https://discourse.paraview.org/t/how-to-delete-a-vtkunstructuredgrid/13398 "2023-11-30T11:02:15Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@Massimiliano\_Leoni](https://discourse.paraview.org/u/Massimiliano_Leoni)
#### Post date: [November 30, 2023, 11:02am UTC](https://discourse.paraview.org/t/how-to-delete-a-vtkunstructuredgrid/13398/1 "2023-11-30T11:02:15Z")
Hello, I hope this question wasn’t asked too many times before as I expect many to have had this issue [still, searching didn’t yield anything useful].
I have a Python script [not written by me] that looks like
```
for i in range(many):
temperature = XMLUnstructuredGridReader(FileName=something[i])
temperature.PointArrayStatus = ['Temperature']
Data = paraview.servermanager.Fetch(temperature)
# do stuff
Delete(temperature)
```
and I think I detected, via debugging, that `Data` is leaking.
I tried to call `Delete(Data)` but I get a complaint that `Data` is the wrong type to pass to `Delete`.
I tried to call `Data.UnRegister` but it needs an argument. Passing `None` doesn’t release the memory; I don’t know what else to pass.
I’m sure it’s something silly but I can’t figure it out. How do I deallocate `Data`?
Any help is very appreciated!
Massimiliano
---
### Author:  [@Christos\_Tsolakis](https://discourse.paraview.org/u/Christos_Tsolakis)
#### Post date: [November 30, 2023, 2:07pm UTC](https://discourse.paraview.org/t/how-to-delete-a-vtkunstructuredgrid/13398/2 "2023-11-30T14:07:04Z")
Since `Data` is reference-counted you can set it to `None` and python will release the memory associated with this object or call `Data.UnRegister(None)`.
---
### Author:  [@Massimiliano\_Leoni](https://discourse.paraview.org/u/Massimiliano_Leoni)
#### Post date: [November 30, 2023, 2:43pm UTC](https://discourse.paraview.org/t/how-to-delete-a-vtkunstructuredgrid/13398/3 "2023-11-30T14:43:33Z")
As I said in my original message, neither of these two options works. 🤔
---
### Author:  [@Christos\_Tsolakis](https://discourse.paraview.org/u/Christos_Tsolakis)
#### Post date: [November 30, 2023, 2:49pm UTC](https://discourse.paraview.org/t/how-to-delete-a-vtkunstructuredgrid/13398/4 "2023-11-30T14:49:34Z")
What if you run the garbage collector after setting the object to `None` ?
```python
import gc
gc.collect()
```
---
### Author:  [@Massimiliano\_Leoni](https://discourse.paraview.org/u/Massimiliano_Leoni)
#### Post date: [November 30, 2023, 2:55pm UTC](https://discourse.paraview.org/t/how-to-delete-a-vtkunstructuredgrid/13398/5 "2023-11-30T14:55:57Z")
Same thing 😢
I think doing nothing, `del Data` and forcing garbage collection is the same thing.