# Radiomics error - No module named ‘pywt’

**URL:** <https://discourse.slicer.org/t/radiomics-error-no-module-named-pywt/19128>\
**Category:** Radiomics\
**Created:** [August 9, 2021, 8:08pm UTC](https://discourse.slicer.org/t/radiomics-error-no-module-named-pywt/19128 "2021-08-09T20:08:33Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![fedorov](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/fedorov/32/14_2.png) [@fedorov](https://discourse.slicer.org/u/fedorov)\
**Post date:** [August 11, 2021, 6:11pm UTC](https://discourse.slicer.org/t/radiomics-error-no-module-named-pywt/19128/2 "2021-08-11T18:11:54Z")

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I tried, and I am unable to even install the extension - I do not know what happened and why it says it is incompatible with the nightly slicer. I posted that question separately [here](https://discourse.slicer.org/t/unable-to-install-extension-incompatible-with-slicer-r30110/19158).

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