def __filename_to_modname(self, pathname):
        """
        @type  pathname: str
        @param pathname: Pathname to a module.

        @rtype:  str
        @return: Module name.
        """
        filename = PathOperations.pathname_to_filename(pathname)
        if filename:
            filename = filename.lower()
            filepart, extpart = PathOperations.split_extension(filename)
            if filepart and extpart:
                modName = filepart
            else:
                modName = filename
        else:
            modName = pathname
        return modName
@type  pathname: str
        @param pathname: Pathname to a module.

        @rtype:  str
        @return: Module name.