Fix, don't search modules in directory that are not packages.
Fix, don't search modules in directory that are not packages.

wfxiang08/Nuitka,kayhayen/Nuitka,kayhayen/Nuitka,wfxiang08/Nuitka,kayhayen/Nuitka,kayhayen/Nuitka,wfxiang08/Nuitka,wfxiang08/Nuitka,tempbottle/Nuitka,tempbottle/Nuitka,tempbottle/Nuitka,tempbottle/Nuitka