# Timesteps in ProgrammableFilter
**URL:** https://discourse.paraview.org/t/timesteps-in-programmablefilter/9931
**Category:** ParaView Support
**Created:** [June 28, 2022, 12:20pm UTC](https://discourse.paraview.org/t/timesteps-in-programmablefilter/9931 "2022-06-28T12:20:59Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@Andrei](https://discourse.paraview.org/u/Andrei)
#### Post date: [June 28, 2022, 12:20pm UTC](https://discourse.paraview.org/t/timesteps-in-programmablefilter/9931/1 "2022-06-28T12:20:59Z")
How to access different timesteps in ProgrammableFilter?
---
### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [June 29, 2022, 11:39am UTC](https://discourse.paraview.org/t/timesteps-in-programmablefilter/9931/2 "2022-06-29T11:39:02Z")
See an example here: [5. Programmable Filter — ParaView Documentation 5.10.0 documentation](https://docs.paraview.org/en/latest/ReferenceManual/pythonProgrammableFilter.html#reading-a-csv-file-series)
---
### Author:  [@Andrei](https://discourse.paraview.org/u/Andrei)
#### Post date: [June 30, 2022, 10:09am UTC](https://discourse.paraview.org/t/timesteps-in-programmablefilter/9931/3 "2022-06-30T10:09:36Z")
Dear @mwestphal, thanks for the help!
In my work, I found a different way. First, I applied the GroupTimeSteps Filter. From this point on, each result of CellData consists of a set of arrays, the number of which is equal to the number of timesteps. Next, in the Programmable Filter, I accessed the results for each timestep as follows.
```auto
input0=inputs[0]
data=input0.CellData['MyData']
for i in range(number_of_timesteps):
print(sum(data.Arrays[i]))
```