Text and meaning of the errors

If the Execute Python activity and/or the environment are incorrectly set up, in the console can appear these errors:

Error at Execute Python in main.neek : '"python"' is not recognized 
as an internal or external command, operable program or batch file.
Please refer to Help Center to make sure the activity 
'Execute Python' was set up correctly. If it doesn't help, 
click this link to contact support.

Or

Error at Execute Python in main.neek :Unable to execute this 
activity because you do not have a Python interpreter installed 
on the computer. Please refer to Help Center to make sure the 
activity 'Execute Python' was set up correctly. If it doesn't help, 
click this link to contact support.

Solution

1. Check if the Python 3 is installed on the computer.
2. Check if the environment variables for Python are set up correctly.
3. Check if the path in the "Path to venv folder" parameter is set up correctly.