# When running Python scripts, how to you set which version of Python is being used?
**URL:** https://discourse.nodered.org/t/when-running-python-scripts-how-to-you-set-which-version-of-python-is-being-used/30810
**Category:** General
**Created:** [28 July 2020 03:28 UTC](https://discourse.nodered.org/t/when-running-python-scripts-how-to-you-set-which-version-of-python-is-being-used/30810 "2020-07-28T03:28:58Z")
**Posts on this page:** 8
**Page:** 1
### Author:  [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)
#### Post date: [28 July 2020 03:28 UTC](https://discourse.nodered.org/t/when-running-python-scripts-how-to-you-set-which-version-of-python-is-being-used/30810/1 "2020-07-28T03:28:58Z")
Forgetting `pythonshell`, nodes seem to have (or be able to have) python code in them.
How do I know which version of `python` they invoke?
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### Author:  [@krambriw](https://discourse.nodered.org/u/krambriw)
#### Post date: [28 July 2020 03:46 UTC](https://discourse.nodered.org/t/when-running-python-scripts-how-to-you-set-which-version-of-python-is-being-used/30810/2 "2020-07-28T03:46:44Z")
To check
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### Author:  [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)
#### Post date: [28 July 2020 03:50 UTC](https://discourse.nodered.org/t/when-running-python-scripts-how-to-you-set-which-version-of-python-is-being-used/30810/3 "2020-07-28T03:50:37Z")
AFAICS, (as far as I can see) there is no mention of python being used.
(Just checked.) NO.
No mention.
Now I can't even find the node in the library.
[This one.](https://github.com/erfanjahanshahlo/node-red-contrib-pifacecad)
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### Author:  [@afelix](https://discourse.nodered.org/u/afelix)
#### Post date: [28 July 2020 09:10 UTC](https://discourse.nodered.org/t/when-running-python-scripts-how-to-you-set-which-version-of-python-is-being-used/30810/4 "2020-07-28T09:10:54Z")
Turns out it is hardcoded for this node.
>
This line tells you it will use Python 2.x, likely 2.7 which has been End Of Life since January 1st.
As such, the instructions for installing dependencies are odd:
> [@](#):
>
> For install dependencies, in your raspberry pi terminal run the below command.
>
> ```auto
> sudo apt-get update
> sudo apt-get upgrade
> sudo apt-get install python{,3}-pifacecad
>
> ```
That last line will install the pifacecad python library for both python2 and python3, yet hardcoded uses python2.
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### Author:  [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)
#### Post date: [28 July 2020 09:27 UTC](https://discourse.nodered.org/t/when-running-python-scripts-how-to-you-set-which-version-of-python-is-being-used/30810/5 "2020-07-28T09:27:37Z")
Thanks.
So 2.7 should be it.
I shall stick to trying the code with that then.
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### Author:  [@zenofmud](https://discourse.nodered.org/u/zenofmud)
#### Post date: [28 July 2020 09:39 UTC](https://discourse.nodered.org/t/when-running-python-scripts-how-to-you-set-which-version-of-python-is-being-used/30810/6 "2020-07-28T09:39:23Z")
@Trying_to_learn - I would open an issue on GitHub pointing out the hard coded version and that it hit EOL
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### Author:  [@TotallyInformation](https://discourse.nodered.org/u/TotallyInformation)
#### Post date: [29 July 2020 16:32 UTC](https://discourse.nodered.org/t/when-running-python-scripts-how-to-you-set-which-version-of-python-is-being-used/30810/7 "2020-07-29T16:32:54Z")
To repeat what Lena said - Python 2.x is end of life and will no longer get updates. You really do need to upgrade.
Good spot Lena.
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### Author:  [@system](https://discourse.nodered.org/u/system)
#### Post date: [27 September 2020 16:32 UTC](https://discourse.nodered.org/t/when-running-python-scripts-how-to-you-set-which-version-of-python-is-being-used/30810/8 "2020-09-27T16:32:54Z")
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