Not compatible with 64-bit Windows?

[SyzygyYuan]

Installed by pip install autosub, then enter autosub, only to find not recognized as an internal or external command, operable program or batch file.
Used where autosub to find the location of autosub executable file, and then found that it had no name extension.
Renamed it to autosub.exe and run, got a ''This version of this file is not compatible with the version of Windows you’re running"

I use Windows 10 21H2 (19044.1706), with Python 3.9.7 (tags/v3.9.7:1016ef3, Aug 30 2021, 20:19:38) [MSC v.1929 64 bit (AMD64)] on win32

[matasoy]

There is a autosub file not an exe, how can we build this to exe?