I have built a GUI using PyQt5 and wanted to distribute it to other computers without Python installed by packageing it with pynsist.
Unfortunately, the default Python, which does exist in the 'Python'-folder of the installation (and which is executable), cannot be found.
I first thought that there must be a problem with the paths pynsist was generating for the shortcut, but it is targeting the right path to pythonw.exe (I am using Python without a terminal) and the .launch.pyw file, which correctly triggers the main() function of the script.
E.g. C:\install_GUI\Python\pythonw.exe 'C:\install_GUI\GUI.launch.pyw'
When trying to start the script directly (not using the shortcut) I get the warning message 'Can't find a default Python'.
Any suggestions what causes this problem and how to make it work?
Could this issue be related to the coding of the scripts?
This means I have included # -*- coding: utf-8 -*- on top of each script, but the automatically generated .launch.pyw file comes without this line.
I know that Python above version 3 has utf-8 coding as a default, but without adding this line to the .launch.pyw file the GUI does not even work on my computer after installation (using Python 3.6.5).
Thank you in advance for your answers!