Using Spec Files — PyInstaller 6.16.0 documentationthe first thing PyInstaller does is to build a spec (specification) file myscript.spec. That file is stored in the --specpath directory, by default the current directory. The spec file tells PyInstaller how to process your script. It encodes the script names and most of the options you give to the pyinstaller command. The spec file is actually executable Python code. PyInstaller builds the app by
