# Reading pvtu with python

**URL:** https://discourse.vtk.org/t/reading-pvtu-with-python/3065
**Category:** Support
**Created:** [April 16, 2020, 8:52am UTC](https://discourse.vtk.org/t/reading-pvtu-with-python/3065 "2020-04-16T08:52:56Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![Dhanush](https://discourse.vtk.org/letter_avatar_proxy/v4/letter/d/8baadc/32.png) [@Dhanush](https://discourse.vtk.org/u/Dhanush)
#### Post date: [April 16, 2020, 8:52am UTC](https://discourse.vtk.org/t/reading-pvtu-with-python/3065/1 "2020-04-16T08:52:56Z")

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Im reading the pvtu files using XMLPUnstructured Reader in python, then I use the CellType to convert the vtkCellCenters to acquire cell center coordinates and the field data. But the (x,y,z) of the centers are changing, why is that?