# Setting Python 3.9.22 as Default in 3DSlicer Python Interactor

**URL:** <https://discourse.slicer.org/t/setting-python-3-9-22-as-default-in-3dslicer-python-interactor/43268>\
**Category:** Development\
**Created:** [June 9, 2025, 9:22am UTC](https://discourse.slicer.org/t/setting-python-3-9-22-as-default-in-3dslicer-python-interactor/43268 "2025-06-09T09:22:30Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![shahrokh](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/shahrokh/32/1499_2.png) [@shahrokh](https://discourse.slicer.org/u/shahrokh)\
**Post date:** [June 9, 2025, 9:22am UTC](https://discourse.slicer.org/t/setting-python-3-9-22-as-default-in-3dslicer-python-interactor/43268/1 "2025-06-09T09:22:30Z")

</div>

Hello Dear Developers and Users

I find out that in 3DSlicer, there are two different Python versions. One is version 3.9.10, which is in Python Interactor and related to `PythonSlicer` executable file. The other is version 3.9.22, which related to `python-real` executable file. Both files are in` bin` folder of Slicer-5.8.1-linux-amd64.

```auto
sn@mph:~$ /home/sn/Slicer-5.8.1-linux-amd64/bin/PythonSlicer --version
Python 3.9.10
sn@mph:~$ /home/sn/Slicer-5.8.1-linux-amd64/bin/python-real --version
Python 3.9.22
sn@mph:~$ 

```

Now my question is, how I can use version 3.9.22 as default in Python Interactor?  
Please guide me.  
Best regards.  
Shahrokh