# Python-function doesn't finish
**URL:** https://discourse.nodered.org/t/python-function-doesnt-finish/71151
**Category:** General
**Created:** [24 November 2022 00:05 UTC](https://discourse.nodered.org/t/python-function-doesnt-finish/71151 "2022-11-24T00:05:59Z")
**Posts on this page:** 10
**Page:** 1
### Author:  [@ErikTavares](https://discourse.nodered.org/u/ErikTavares)
#### Post date: [24 November 2022 00:05 UTC](https://discourse.nodered.org/t/python-function-doesnt-finish/71151/1 "2022-11-24T00:05:59Z")
Python Funcion is running, but it doesn't finish.
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### Author:  [@TotallyInformation](https://discourse.nodered.org/u/TotallyInformation)
#### Post date: [24 November 2022 00:41 UTC](https://discourse.nodered.org/t/python-function-doesnt-finish/71151/2 "2022-11-24T00:41:09Z")
You'll need to give us a few more clues!
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### Author:  [@ErikTavares](https://discourse.nodered.org/u/ErikTavares)
#### Post date: [24 November 2022 11:57 UTC](https://discourse.nodered.org/t/python-function-doesnt-finish/71151/3 "2022-11-24T11:57:12Z")
The function is empty, with only the default return msg. I don't know if you have to install something else for it to work.
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### Author:  [@jbudd](https://discourse.nodered.org/u/jbudd)
#### Post date: [24 November 2022 12:06 UTC](https://discourse.nodered.org/t/python-function-doesnt-finish/71151/4 "2022-11-24T12:06:58Z")
A function node does nothing at all unless a message arrives at the input.
If the only code in it is `return msg;` then all it does is pass the msg from input to output.
So I conclude that your function is not actually running.
Do you have any code in the "On Start" and "On Stop" tabs?
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### Author:  [@ErikTavares](https://discourse.nodered.org/u/ErikTavares)
#### Post date: [24 November 2022 12:42 UTC](https://discourse.nodered.org/t/python-function-doesnt-finish/71151/5 "2022-11-24T12:42:40Z")
I think the python-function does'n have guides "On Start" and "On Stop".
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### Author:  [@Colin](https://discourse.nodered.org/u/Colin)
#### Post date: [24 November 2022 13:24 UTC](https://discourse.nodered.org/t/python-function-doesnt-finish/71151/6 "2022-11-24T13:24:39Z")
To get that to do anything you have to pass it a message.
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### Author:  [@ErikTavares](https://discourse.nodered.org/u/ErikTavares)
#### Post date: [24 November 2022 13:28 UTC](https://discourse.nodered.org/t/python-function-doesnt-finish/71151/7 "2022-11-24T13:28:39Z")
You don't need to set up a python environment for python-function to work?
Uploading: python\_func2.jpg...
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### Author:  [@TotallyInformation](https://discourse.nodered.org/u/TotallyInformation)
#### Post date: [24 November 2022 15:13 UTC](https://discourse.nodered.org/t/python-function-doesnt-finish/71151/8 "2022-11-24T15:13:30Z")
> [@ErikTavares](#):
>
> The function is empty, with only the default return msg. I don't know if you have to install something else for it to work.
I don't think it is not finishing. You haven't asked it to start.
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### Author:  [@ErikTavares](https://discourse.nodered.org/u/ErikTavares)
#### Post date: [24 November 2022 17:42 UTC](https://discourse.nodered.org/t/python-function-doesnt-finish/71151/9 "2022-11-24T17:42:53Z")
there is a tutorial [Install python and create virtual environments directly from the node-red editor (flow) - Node-RED](https://flows.nodered.org/flow/778859ca2503db35ff0e12341508efef/in/vL27qorhYRSn)
about to create python environment for Node-RED. The second line doen't work on Windows because it uses the chmod command. Command is only a linux command.
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### Author:  [@system](https://discourse.nodered.org/u/system)
#### Post date: [23 January 2023 17:42 UTC](https://discourse.nodered.org/t/python-function-doesnt-finish/71151/10 "2023-01-23T17:42:58Z")
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