PyInstaller reads a Python script written by you. It analyzes your code to discover every other module and library your script needs in order to execute. Then it collects copies of all those files – including the active Python interpreter! … They do not need to install any particular version of Python or any modules.

Why is PyInstaller so slow?

PyInstaller’s bootloader is usually quite fast in one-dir mode, but it can be much slower in one-file mode, because it depacks everything into a temporary directory. On Windows, I/O is very slow, and then you have antiviruses that will want to double check all those DLL files. PyQt itself is a non-issue.

Does PyInstaller work with packages?

PyInstaller freezes (packages) Python applications into stand-alone executables, under Windows, GNU/Linux, Mac OS X, FreeBSD, Solaris and AIX. … The main goal of PyInstaller is to be compatible with 3rd-party packages out-of-the-box.