App created with PyInstaller has a slow startup

Question

I have an application written in Python and \'compiled\' with PyInstaller. It also uses PyQt for the GUI framework.

Running this application has a delay of about 10

Answer 1

I suspect that you're using pyinstaller's "one file" mode -- this mode means that it has to unpack all of the libraries to a temporary directory before the app can start. In the case of Qt, these libraries are quite large and take a few seconds to decompress. Try using the "one directory" mode and see if that helps?